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Publisher: Elsevier   (Total: 3162 journals)

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Showing 1401 - 1600 of 3162 Journals sorted alphabetically
Intl. J. of Adhesion and Adhesives     Hybrid Journal   (Followers: 18, SJR: 0.926, CiteScore: 2)
Intl. J. of Africa Nursing Sciences     Open Access   (SJR: 0.396, CiteScore: 1)
Intl. J. of Antimicrobial Agents     Hybrid Journal   (Followers: 10, SJR: 1.699, CiteScore: 4)
Intl. J. of Applied Earth Observation and Geoinformation     Hybrid Journal   (Followers: 34, SJR: 1.591, CiteScore: 4)
Intl. J. of Approximate Reasoning     Hybrid Journal   (Followers: 1, SJR: 0.866, CiteScore: 3)
Intl. J. of Biochemistry & Cell Biology     Hybrid Journal   (Followers: 6, SJR: 1.492, CiteScore: 3)
Intl. J. of Biological Macromolecules     Hybrid Journal   (Followers: 2, SJR: 0.917, CiteScore: 4)
Intl. J. of Cardiology     Hybrid Journal   (Followers: 16, SJR: 1.2, CiteScore: 2)
Intl. J. of Chemical and Analytical Science     Full-text available via subscription   (Followers: 4)
Intl. J. of Child-Computer Interaction     Hybrid Journal   (Followers: 2, SJR: 0.479, CiteScore: 3)
Intl. J. of Clinical and Health Psychology     Open Access   (Followers: 20, SJR: 1.345, CiteScore: 4)
Intl. J. of Coal Geology     Hybrid Journal   (Followers: 4, SJR: 2.186, CiteScore: 5)
Intl. J. of Critical Infrastructure Protection     Hybrid Journal   (Followers: 8, SJR: 0.648, CiteScore: 2)
Intl. J. of Dental Science and Research     Full-text available via subscription   (Followers: 1)
Intl. J. of Developmental Neuroscience     Hybrid Journal   (Followers: 8, SJR: 0.986, CiteScore: 2)
Intl. J. of Diabetes Mellitus     Open Access   (Followers: 9)
Intl. J. of Disaster Risk Reduction     Hybrid Journal   (Followers: 18, SJR: 0.769, CiteScore: 2)
Intl. J. of Drug Policy     Hybrid Journal   (Followers: 456, SJR: 1.441, CiteScore: 3)
Intl. J. of e-Navigation and Maritime Economy     Open Access   (Followers: 3)
Intl. J. of Educational Development     Hybrid Journal   (Followers: 14, SJR: 0.822, CiteScore: 1)
Intl. J. of Educational Research     Hybrid Journal   (Followers: 27, SJR: 0.617, CiteScore: 1)
Intl. J. of Electrical Power & Energy Systems     Open Access   (Followers: 24, SJR: 1.276, CiteScore: 5)
Intl. J. of Engineering Science     Hybrid Journal   (Followers: 5, SJR: 2.82, CiteScore: 6)
Intl. J. of Epilepsy     Full-text available via subscription   (Followers: 2, SJR: 0.126, CiteScore: 0)
Intl. J. of Fatigue     Hybrid Journal   (Followers: 38, SJR: 1.402, CiteScore: 3)
Intl. J. of Food Microbiology     Hybrid Journal   (Followers: 14, SJR: 1.366, CiteScore: 4)
Intl. J. of Forecasting     Hybrid Journal   (Followers: 28, SJR: 1.879, CiteScore: 3)
Intl. J. of Gastronomy and Food Science     Open Access   (Followers: 4, SJR: 0.422, CiteScore: 1)
Intl. J. of Gerontology     Open Access   (Followers: 8, SJR: 0.215, CiteScore: 0)
Intl. J. of Greenhouse Gas Control     Partially Free   (Followers: 5, SJR: 1.458, CiteScore: 4)
Intl. J. of Heat and Fluid Flow     Hybrid Journal   (Followers: 36, SJR: 0.947, CiteScore: 3)
Intl. J. of Heat and Mass Transfer     Hybrid Journal   (Followers: 269, SJR: 1.498, CiteScore: 4)
Intl. J. of Hospitality Management     Hybrid Journal   (Followers: 20, SJR: 2.027, CiteScore: 4)
Intl. J. of Human-Computer Studies     Hybrid Journal   (Followers: 18, SJR: 0.605, CiteScore: 3)
Intl. J. of Hydrogen Energy     Partially Free   (Followers: 20, SJR: 1.116, CiteScore: 4)
Intl. J. of Hygiene and Environmental Health     Hybrid Journal   (Followers: 7, SJR: 1.334, CiteScore: 4)
Intl. J. of Impact Engineering     Hybrid Journal   (Followers: 9, SJR: 2.124, CiteScore: 4)
Intl. J. of Industrial Ergonomics     Hybrid Journal   (Followers: 15, SJR: 0.795, CiteScore: 2)
Intl. J. of Industrial Organization     Hybrid Journal   (Followers: 24, SJR: 0.873, CiteScore: 1)
Intl. J. of Infectious Diseases     Open Access   (Followers: 8, SJR: 1.514, CiteScore: 3)
Intl. J. of Information Management     Hybrid Journal   (Followers: 308, SJR: 1.373, CiteScore: 6)
Intl. J. of Intercultural Relations     Hybrid Journal   (Followers: 12, SJR: 0.732, CiteScore: 2)
Intl. J. of Law and Psychiatry     Hybrid Journal   (Followers: 8, SJR: 0.546, CiteScore: 1)
Intl. J. of Law, Crime and Justice     Hybrid Journal   (Followers: 56, SJR: 0.362, CiteScore: 1)
Intl. J. of Machine Tools and Manufacture     Hybrid Journal   (Followers: 7, SJR: 2.7, CiteScore: 6)
Intl. J. of Management Education     Hybrid Journal   (Followers: 8, SJR: 0.597, CiteScore: 2)
Intl. J. of Marine Energy     Full-text available via subscription   (Followers: 1, SJR: 0.92, CiteScore: 2)
Intl. J. of Mass Spectrometry     Hybrid Journal   (Followers: 17, SJR: 0.61, CiteScore: 2)
Intl. J. of Mechanical Sciences     Hybrid Journal   (Followers: 13, SJR: 1.595, CiteScore: 4)
Intl. J. of Medical Informatics     Hybrid Journal   (Followers: 9, SJR: 1.247, CiteScore: 4)
Intl. J. of Medical Microbiology     Hybrid Journal   (Followers: 8, SJR: 1.717, CiteScore: 4)
Intl. J. of Mineral Processing     Hybrid Journal   (Followers: 10, SJR: 0.782, CiteScore: 2)
Intl. J. of Mining Science and Technology     Open Access   (Followers: 3, SJR: 1.323, CiteScore: 2)
Intl. J. of Multiphase Flow     Hybrid Journal   (Followers: 8, SJR: 1.218, CiteScore: 3)
Intl. J. of Naval Architecture and Ocean Engineering     Open Access   (Followers: 3, SJR: 0.571, CiteScore: 1)
Intl. J. of Neuropharmacology     Full-text available via subscription   (Followers: 1)
Intl. J. of Non-Linear Mechanics     Hybrid Journal   (Followers: 8, SJR: 1.032, CiteScore: 2)
Intl. J. of Nursing Sciences     Open Access   (Followers: 1, SJR: 0.285, CiteScore: 1)
Intl. J. of Nursing Studies     Hybrid Journal   (Followers: 15, SJR: 1.646, CiteScore: 4)
Intl. J. of Obstetric Anesthesia     Full-text available via subscription   (Followers: 13, SJR: 0.717, CiteScore: 2)
Intl. J. of Oral and Maxillofacial Surgery     Hybrid Journal   (Followers: 8, SJR: 1.137, CiteScore: 2)
Intl. J. of Orthopaedic and Trauma Nursing     Hybrid Journal   (Followers: 10, SJR: 0.369, CiteScore: 1)
Intl. J. of Osteopathic Medicine     Hybrid Journal   (Followers: 2, SJR: 0.297, CiteScore: 1)
Intl. J. of Paleopathology     Partially Free   (Followers: 8, SJR: 0.618, CiteScore: 1)
Intl. J. of Pavement Research and Technology     Open Access   (Followers: 6, SJR: 0.311, CiteScore: 1)
Intl. J. of Pediatric Otorhinolaryngology     Full-text available via subscription   (Followers: 1, SJR: 0.783, CiteScore: 1)
Intl. J. of Pediatric Otorhinolaryngology Extra     Full-text available via subscription   (Followers: 1, SJR: 0.11, CiteScore: 0)
Intl. J. of Pediatrics and Adolescent Medicine     Open Access   (Followers: 1, SJR: 0.144, CiteScore: 1)
Intl. J. of Pharmaceutics     Hybrid Journal   (Followers: 36, SJR: 1.172, CiteScore: 4)
Intl. J. of Plasticity     Hybrid Journal   (Followers: 7, SJR: 3.395, CiteScore: 6)
Intl. J. of Pressure Vessels and Piping     Hybrid Journal   (Followers: 25, SJR: 0.981, CiteScore: 2)
Intl. J. of Production Economics     Hybrid Journal   (Followers: 15, SJR: 2.401, CiteScore: 5)
Intl. J. of Project Management     Hybrid Journal   (Followers: 49, SJR: 1.463, CiteScore: 5)
Intl. J. of Psychophysiology     Hybrid Journal   (Followers: 5, SJR: 1.157, CiteScore: 3)
Intl. J. of Radiation Oncology*Biology*Physics     Hybrid Journal   (Followers: 32, SJR: 2.485, CiteScore: 3)
Intl. J. of Refractory Metals and Hard Materials     Hybrid Journal   (Followers: 5)
Intl. J. of Refrigeration     Full-text available via subscription   (Followers: 5, SJR: 1.471, CiteScore: 3)
Intl. J. of Research in Marketing     Hybrid Journal   (Followers: 20, SJR: 2.528, CiteScore: 3)
Intl. J. of Rock Mechanics and Mining Sciences     Hybrid Journal   (Followers: 8, SJR: 2.259, CiteScore: 4)
Intl. J. of Sediment Research     Full-text available via subscription   (Followers: 3, SJR: 0.663, CiteScore: 2)
Intl. J. of Solids and Structures     Hybrid Journal   (Followers: 15, SJR: 1.295, CiteScore: 3)
Intl. J. of Spine Surgery     Hybrid Journal   (Followers: 3, SJR: 0.793, CiteScore: 2)
Intl. J. of Surgery     Hybrid Journal   (Followers: 8, SJR: 0.834, CiteScore: 3)
Intl. J. of Surgery Case Reports     Open Access   (Followers: 4, SJR: 0.26, CiteScore: 1)
Intl. J. of Surgery Open     Open Access   (SJR: 0.116, CiteScore: 0)
Intl. J. of Surgery Protocols     Open Access   (Followers: 1, SJR: 0.141, CiteScore: 1)
Intl. J. of Sustainable Built Environment     Open Access   (Followers: 5, SJR: 0.746, CiteScore: 3)
Intl. J. of the Sociology of Law     Hybrid Journal   (Followers: 18)
Intl. J. of Thermal Sciences     Hybrid Journal   (Followers: 18, SJR: 1.429, CiteScore: 4)
Intl. J. of Transportation Science and Technology     Open Access   (Followers: 10)
Intl. J. of Veterinary Science and Medicine     Open Access   (Followers: 4)
Intl. J. of Women's Dermatology     Open Access   (SJR: 0.213, CiteScore: 0)
Intl. Medical Review on Down Syndrome     Full-text available via subscription  
Intl. Orthodontics     Full-text available via subscription   (Followers: 3, SJR: 0.239, CiteScore: 0)
Intl. Perspectives on Child and Adolescent Mental Health     Full-text available via subscription   (Followers: 5)
Intl. Review of Cell and Molecular Biology     Full-text available via subscription   (Followers: 6, SJR: 1.973, CiteScore: 4)
Intl. Review of Cytology     Full-text available via subscription  
Intl. Review of Economics & Finance     Hybrid Journal   (Followers: 26, SJR: 0.841, CiteScore: 2)
Intl. Review of Economics Education     Hybrid Journal   (Followers: 1, SJR: 0.632, CiteScore: 1)
Intl. Review of Financial Analysis     Hybrid Journal   (Followers: 7, SJR: 0.755, CiteScore: 2)
Intl. Review of Law and Economics     Hybrid Journal   (Followers: 21, SJR: 0.572, CiteScore: 1)
Intl. Review of Neurobiology     Full-text available via subscription   (Followers: 2, SJR: 1.497, CiteScore: 3)
Intl. Review of Research in Mental Retardation     Full-text available via subscription   (Followers: 7)
Intl. Soil and Water Conservation Research     Open Access   (SJR: 0.667, CiteScore: 2)
Intl. Strategic Management Review     Open Access   (Followers: 4)
Investigación en Educación Médica     Open Access  
Investigaciones de Historia Económica     Full-text available via subscription   (SJR: 0.264, CiteScore: 0)
Investigaciones Europeas de Dirección y Economía de la Empresa     Open Access  
IRBM     Full-text available via subscription   (SJR: 0.298, CiteScore: 1)
IRBM News     Full-text available via subscription   (SJR: 0.139, CiteScore: 0)
ISA Transactions     Full-text available via subscription   (Followers: 1, SJR: 1.115, CiteScore: 4)
iScience     Open Access  
ISPRS J. of Photogrammetry and Remote Sensing     Hybrid Journal   (Followers: 70, SJR: 3.169, CiteScore: 8)
Italian Oral Surgery     Full-text available via subscription   (Followers: 1)
ITBM-RBM     Full-text available via subscription   (Followers: 1)
ITBM-RBM News     Full-text available via subscription   (Followers: 1)
J. de Chirurgie Viscerale     Full-text available via subscription   (Followers: 1, SJR: 0.264, CiteScore: 0)
J. de Gynécologie Obstétrique et Biologie de la Reproduction     Full-text available via subscription  
J. de Mathématiques Pures et Appliquées     Full-text available via subscription   (Followers: 4, SJR: 3.571, CiteScore: 2)
J. de Mycologie Médicale / J. of Medical Mycology     Full-text available via subscription   (Followers: 2, SJR: 0.495, CiteScore: 2)
J. de Pédiatrie et de Puériculture     Full-text available via subscription   (SJR: 0.116, CiteScore: 0)
J. de Radiologie     Full-text available via subscription  
J. de Radiologie Diagnostique et Interventionnelle     Full-text available via subscription   (Followers: 2)
J. de Thérapie Comportementale et Cognitive     Full-text available via subscription   (SJR: 0.111, CiteScore: 0)
J. de Traumatologie du Sport     Full-text available via subscription   (Followers: 2, SJR: 0.152, CiteScore: 0)
J. des Anti-infectieux     Full-text available via subscription   (Followers: 2, SJR: 0.107, CiteScore: 0)
J. des Maladies Vasculaires     Full-text available via subscription  
J. Européen des Urgences     Full-text available via subscription   (Followers: 1)
J. Européen des Urgences et de Réanimation     Hybrid Journal   (SJR: 0.108, CiteScore: 0)
J. for Nature Conservation     Hybrid Journal   (Followers: 28, SJR: 0.894, CiteScore: 2)
J. for Nurse Practitioners     Hybrid Journal   (Followers: 12, SJR: 0.179, CiteScore: 0)
J. Français d'Ophtalmologie     Full-text available via subscription   (Followers: 3, SJR: 0.292, CiteScore: 0)
J. of Academic Librarianship     Hybrid Journal   (Followers: 1031, SJR: 1.224, CiteScore: 2)
J. of Accounting and Economics     Hybrid Journal   (Followers: 37, SJR: 6.875, CiteScore: 4)
J. of Accounting and Public Policy     Hybrid Journal   (Followers: 7, SJR: 0.91, CiteScore: 2)
J. of Accounting Education     Hybrid Journal   (Followers: 6, SJR: 0.882, CiteScore: 1)
J. of Accounting Literature     Hybrid Journal   (Followers: 7, SJR: 0.986, CiteScore: 3)
J. of Acupuncture and Meridian Studies     Open Access   (Followers: 1, SJR: 0.347, CiteScore: 1)
J. of Acute Medicine     Open Access   (SJR: 0.196, CiteScore: 1)
J. of Adolescence     Hybrid Journal   (Followers: 14, SJR: 1.01, CiteScore: 2)
J. of Adolescent Health     Hybrid Journal   (Followers: 23, SJR: 1.851, CiteScore: 4)
J. of Advanced Research     Open Access   (Followers: 2, SJR: 0.741, CiteScore: 4)
J. of Aerosol Science     Hybrid Journal   (Followers: 5, SJR: 0.828, CiteScore: 3)
J. of Affective Disorders     Hybrid Journal   (Followers: 18, SJR: 2.053, CiteScore: 4)
J. of African Earth Sciences     Hybrid Journal   (Followers: 11, SJR: 0.681, CiteScore: 2)
J. of African Trade     Open Access  
J. of Aging Studies     Hybrid Journal   (Followers: 11, SJR: 0.8, CiteScore: 2)
J. of Air Transport Management     Hybrid Journal   (Followers: 9, SJR: 0.981, CiteScore: 2)
J. of Algebra     Full-text available via subscription   (Followers: 5, SJR: 1.187, CiteScore: 1)
J. of Algorithms     Full-text available via subscription   (Followers: 4)
J. of Allergy and Clinical Immunology     Hybrid Journal   (Followers: 30, SJR: 5.049, CiteScore: 7)
J. of Allergy and Clinical Immunology : In Practice     Full-text available via subscription   (Followers: 12, SJR: 1.461, CiteScore: 3)
J. of Alloys and Compounds     Hybrid Journal   (Followers: 12, SJR: 1.02, CiteScore: 4)
J. of American Association for Pediatric Ophthalmology and Strabismus     Hybrid Journal   (Followers: 7, SJR: 0.752, CiteScore: 1)
J. of Analytical and Applied Pyrolysis     Hybrid Journal   (Followers: 3, SJR: 1.129, CiteScore: 4)
J. of Anesthesia History     Full-text available via subscription   (Followers: 1, SJR: 0.19, CiteScore: 0)
J. of Anthropological Archaeology     Hybrid Journal   (Followers: 79, SJR: 1.24, CiteScore: 2)
J. of Anxiety Disorders     Hybrid Journal   (Followers: 16, SJR: 2.043, CiteScore: 4)
J. of Applied Biomedicine     Open Access   (Followers: 2, SJR: 0.348, CiteScore: 2)
J. of Applied Developmental Psychology     Hybrid Journal   (Followers: 13, SJR: 1.339, CiteScore: 3)
J. of Applied Economics     Full-text available via subscription   (Followers: 8, SJR: 0.235, CiteScore: 1)
J. of Applied Geophysics     Hybrid Journal   (Followers: 15, SJR: 0.636, CiteScore: 2)
J. of Applied Logic     Full-text available via subscription   (SJR: 0.277, CiteScore: 1)
J. of Applied Mathematics and Mechanics     Full-text available via subscription   (Followers: 9, SJR: 0.321, CiteScore: 0)
J. of Applied Research and Technology     Open Access   (SJR: 0.255, CiteScore: 1)
J. of Applied Research in Memory and Cognition     Partially Free   (Followers: 12, SJR: 1.303, CiteScore: 2)
J. of Applied Research on Medicinal and Aromatic Plants     Hybrid Journal   (SJR: 0.355, CiteScore: 2)
J. of Approximation Theory     Hybrid Journal   (Followers: 1, SJR: 0.907, CiteScore: 1)
J. of Archaeological Science     Hybrid Journal   (Followers: 66, SJR: 1.885, CiteScore: 3)
J. of Archaeological Science : Reports     Hybrid Journal   (Followers: 17, SJR: 0.659, CiteScore: 1)
J. of Arid Environments     Hybrid Journal   (Followers: 14, SJR: 0.763, CiteScore: 2)
J. of Arrhythmia     Open Access   (SJR: 0.398, CiteScore: 1)
J. of Arthroplasty     Hybrid Journal   (Followers: 48, SJR: 2.373, CiteScore: 3)
J. of Arthroscopy and Joint Surgery     Full-text available via subscription   (Followers: 2, SJR: 0.103, CiteScore: 0)
J. of Asia-Pacific Biodiversity     Open Access   (SJR: 0.361, CiteScore: 1)
J. of Asia-Pacific Entomology     Full-text available via subscription   (Followers: 6, SJR: 0.373, CiteScore: 1)
J. of Asian Ceramic Societies     Open Access   (Followers: 2, SJR: 0.509, CiteScore: 2)
J. of Asian Earth Sciences     Hybrid Journal   (Followers: 13, SJR: 1.488, CiteScore: 3)
J. of Asian Economics     Hybrid Journal   (Followers: 1, SJR: 0.419, CiteScore: 1)
J. of Atmospheric and Solar-Terrestrial Physics     Hybrid Journal   (Followers: 146, SJR: 0.696, CiteScore: 2)
J. of Autoimmunity     Hybrid Journal   (Followers: 11, SJR: 2.046, CiteScore: 7)
J. of Ayurveda and Integrative Medicine     Open Access   (Followers: 3, SJR: 0.338, CiteScore: 1)
J. of Banking & Finance     Hybrid Journal   (Followers: 174)
J. of Basic & Applied Zoology : Physiology     Open Access   (Followers: 3)
J. of Behavior Therapy and Experimental Psychiatry     Hybrid Journal   (Followers: 4, SJR: 1.42, CiteScore: 3)
J. of Behavior, Health & Social Issues     Open Access   (Followers: 7)
J. of Behavioral and Experimental Economics     Full-text available via subscription   (Followers: 8, SJR: 0.593, CiteScore: 1)
J. of Behavioral and Experimental Finance     Full-text available via subscription   (Followers: 3, SJR: 0.475, CiteScore: 1)
J. of Biochemical and Biophysical Methods     Hybrid Journal   (Followers: 4)
J. of Biomechanics     Hybrid Journal   (Followers: 37, SJR: 1.147, CiteScore: 3)
J. of Biomedical Informatics     Partially Free   (Followers: 15, SJR: 1.028, CiteScore: 4)
J. of Biomedical Research     Full-text available via subscription   (Followers: 3, SJR: 0.712, CiteScore: 2)
J. of Bionic Engineering     Full-text available via subscription   (SJR: 0.584, CiteScore: 3)
J. of Bioscience and Bioengineering     Full-text available via subscription   (Followers: 31, SJR: 0.675, CiteScore: 2)
J. of Biotechnology     Hybrid Journal   (Followers: 63, SJR: 0.929, CiteScore: 3)
J. of Bodywork and Movement Therapies     Hybrid Journal   (Followers: 17, SJR: 0.522, CiteScore: 1)
J. of Bone Oncology     Open Access   (Followers: 1, SJR: 0.941, CiteScore: 3)
J. of Building Engineering     Hybrid Journal   (Followers: 2, SJR: 0.753, CiteScore: 3)
J. of Business Research     Hybrid Journal   (Followers: 22, SJR: 1.26, CiteScore: 3)
J. of Business Venturing     Hybrid Journal   (Followers: 26, SJR: 5.212, CiteScore: 9)

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Journal Cover
Journal of Applied Mathematics and Mechanics
Journal Prestige (SJR): 0.321
Number of Followers: 9  
 
  Full-text available via subscription Subscription journal
ISSN (Print) 0021-8928
Published by Elsevier Homepage  [3162 journals]
  • Mass loss and light curve of a large meteoroid. Analytical solution
    • Authors: I.G. Brykina; G.A. Tirskiy
      Abstract: Publication date: Available online 31 May 2018
      Source:Journal of Applied Mathematics and Mechanics
      Author(s): I.G. Brykina, G.A. Tirskiy
      The interaction of a large meteoroid with the Earth's atmosphere is considered in the case when it moves as a single body and when it moves as a cloud of fragments with a common shock wave. Using the literature data, an expression has been obtained for the radiative heat transfer coefficient per unit area of the midsection of a meteoroid modelled by an oblate spheroid as a function of its velocity, size, the atmospheric density, and its oblateness coefficient. The regions of predominant influence of the convective and radiative fluxes are estimated. An expression is obtained for the drag coefficient of a spheroid. Assuming that the mass of the meteoroid decreases faster than its velocity, analytical solutions of equations of the physical theory of meteors have been obtained for the mass loss of a meteoroid of spheroidal shape, the profile of the light curve, and the altitude at which the maximum of this curve is reached. The fragmentation model, which considers the meteoroid as a cloud of fragments with the spaces between them filled by a vapour, expanding in the lateral directions and flattening in the flight direction with a rate that depends on the degree of expansion is proposed. Using this model and the analytical solutions obtained, the interaction of the Chelyabinsk meteoroid with the atmosphere is considered. Good agreement between the found solution for the profile of the light curve and the observed data–light curves based on different video recordings–is demonstrated down to an altitude of 27km.

      PubDate: 2018-06-01T07:22:31Z
      DOI: 10.1016/j.jappmathmech.2018.03.008
       
  • On methods for increasing the margin of stability of motion of optimum
           bodies
    • Authors: G. Ye. Yakunina
      Abstract: Publication date: Available online 9 May 2018
      Source:Journal of Applied Mathematics and Mechanics
      Author(s): G. Ye. Yakunina
      The possibilities of increasing the margin of stability of motion of optimum bodies having minimum drag or maximum penetration depth during high-velocity motion in a dense medium are investigated. It is assumed that the stresses generated by the medium acting on a surface element of the body are described within the framework of the local interaction model by binomial formulae quadratic in the velocity. A study has been performed for the case when the body shape is taken to be prescribed and when it is possible to vary it without departing from the class of optimum bodies. It is shown that for a fixed shape the simplest ways to increase the margin of stability of motion of the body are to decrease its mass or to move the centre of mass of the body closer to its vertex. It is possible to increase the margin of stability of motion of the body without decreasing its mass and without breaching the homogeneity of the body if it is equipped with fins. A method has been developed for constructing homogeneous optimum bodies with fins, whose bow (nose or leading part) is an optimum cone (OC) and whose stern (aft part) is constructed from segments of an OC and planes tangent to an OC of shorter length. It is shown that for prescribed mass, length, and base area of the body it is always possible to construct a homogeneous optimum body with positive margin of stability of motion. A test of the analytical results was carried out, based on a numerical solution of the Cauchy problem for the system of equations of motion of the body, constructed without simplifying restrictions on the shape of the body or the nature of its motion.

      PubDate: 2018-05-29T07:15:07Z
      DOI: 10.1016/j.jappmathmech.2018.03.015
       
  • Asymmetric separated flow about a Nikolsky wing with a protrusion
    • Authors: A.M. Gaifullin; V.V. Zhvik
      Abstract: Publication date: Available online 8 May 2018
      Source:Journal of Applied Mathematics and Mechanics
      Author(s): A.M. Gaifullin, V.V. Zhvik
      The flow of an inviscid incompressible fluid about a wing of low aspect ratio with a parabolic planform (a Nikolsky wing) is investigated; a protrusion, whose height grows according to a parabolic law, is mounted on the leeward side of the wing in the symmetry plane. It is shown that for symmetric boundary conditions, along with a symmetric solution, an asymmetric solution also exists. The dependence of the asymmetric solution on the wing geometry is examined. It is shown that critical values of the wing curvature and the height of the protrusion exist, for which the asymmetric solution continuously transitions to the symmetric one. In addition, it is shown that a limit asymmetric solution exists which corresponds to an infinitely large protrusion. The stability of the solutions found is discussed.

      PubDate: 2018-05-29T07:15:07Z
      DOI: 10.1016/j.jappmathmech.2018.03.005
       
  • Bifurcation diagram of the self-sustained oscillation modes for a system
           with dynamic symmetry
    • Authors: L.A. Klimina; B. Ya. Lokshin; V.A. Samsonov
      Abstract: Publication date: Available online 8 May 2018
      Source:Journal of Applied Mathematics and Mechanics
      Author(s): L.A. Klimina, B. Ya. Lokshin, V.A. Samsonov
      An autonomous dynamical system with one degree of freedom is considered which possesses properties such that an asymptotically stable equilibrium becomes unstable after a certain parameter passes through zero and two new symmetrically arranged equilibria are created alongside it. It is known that, for sufficiently small values of the above mentioned parameter, bifurcation can be accompanied by the occurrence of periodic trajectories (cycles). To describe them, a bifurcation diagram of the relation between the amplitude of the cycles and the parameter, which characterizes the dissipation and takes finite values, is constructed. The results obtained are illustrated using the example of an investigation of the self-induced oscillatory modes in a model of an aerodynamic pendulum that takes account of the displacement of the pressure centre when the angle of attack is changed.

      PubDate: 2018-05-29T07:15:07Z
      DOI: 10.1016/j.jappmathmech.2018.03.012
       
  • Numerical-analytical method for investigating the stability of motion of
           bodies of revolution in soft soil media
    • Authors: V.G. Bazhenov; V.L. Kotov
      Abstract: Publication date: Available online 8 May 2018
      Source:Journal of Applied Mathematics and Mechanics
      Author(s): V.G. Bazhenov, V.L. Kotov
      A method is presented of investigating the stability of rectilinear motion of a body of revolution in a compressible soil medium with nonlinear physical-mechanical properties of the soil and two-dimensional effects of flow taken into account. The parameters of the axisymmetric process are calculated numerically, whereas the perturbed motion – the radial displacement and rotation relative to the centre of mass – is determined analytically. In the particular case of a conical projectile and linear pressure distribution along the generatrix, an estimate is obtained of the critical position of the centre of mass as a function of the taper angle, the mass and velocity of the body, the coefficient of friction, and the hydrodynamic parameters of the soil medium. Unlike the usually implemented situation of constant pressure postulated by the local interaction models, a displacement of the critical position of the centre of mass by up to 20% of the length of the cone has been found, which leads to a substantial decrease in the margin of stability in a restricted sense. Here, the force parameters and the kinematic parameters of motion of the cone on the boundary of the stability region differ both qualitatively and quantitatively. The stability of motion of bodies in soil media with a nonlinear pressure distribution over the contact surface has not previously been investigated.

      PubDate: 2018-05-29T07:15:07Z
      DOI: 10.1016/j.jappmathmech.2018.03.016
       
  • Modelling of a continuously inhomogeneous coating of an elastic sphere by
           
    • Authors: L.A. Tolokonnikov
      Abstract: Publication date: Available online 8 May 2018
      Source:Journal of Applied Mathematics and Mechanics
      Author(s): L.A. Tolokonnikov
      On the basis of analytical solutions of problems on the diffraction of a plane sound wave on a homogeneous elastic sphere with a discretely layered coating and with a continuously-inhomogeneous coating, the direction diagrams of the scattered field are calculated. It is shown that a radially inhomogeneous coating can be modelled by a system of homogeneous elastic layers. For a linear dependence of the inhomogeneity, the number of homogeneous layers in the discretely-layered coating needed to ensure a prescribed accuracy of matching of the direction diagrams of bodies with a discretely layered coating to a continuously-inhomogeneous coating has been determined.

      PubDate: 2018-05-29T07:15:07Z
      DOI: 10.1016/j.jappmathmech.2018.03.017
       
  • The solution of a certain class of dual integral equations with the
           right-hand side in the form of a Fourier series and its application to the
           solution of contact problems for inhomogeneous media
    • Authors: S.M. Aizikovich; S.S. Volkov; B.E. Mitrin
      Abstract: Publication date: Available online 8 May 2018
      Source:Journal of Applied Mathematics and Mechanics
      Author(s): S.M. Aizikovich, S.S. Volkov, B.E. Mitrin
      Using the bilateral asymptotic method, a semi-analytical solution of a dual integral equation with its right-hand side in the form of a Fourier series is constructed. This equation arises in the solution of a number of contact problems of elasticity theory for bodies with inhomogeneous coatings. The efficiency of the method is illustrated in the example of the solution of the plane contact problem on bending of a beam lying on a functionally graded strip with arbitrary variation of the elastic moduli with depth. It is assumed that the strip is perfectly bonded to an elastic half-plane. Numerical results are presented for a strip whose Young's modulus varies harmonically with depth. In this case, Young's modulus of the substrate is 100 times greater than at the lower boundary of the coating.

      PubDate: 2018-05-29T07:15:07Z
      DOI: 10.1016/j.jappmathmech.2018.03.018
       
  • Characteristic features of the process of wear of a punch and a thin
           elastic strip with non-uniform friction and wear parameters
    • Authors: I.A. Soldatenkov
      Abstract: Publication date: Available online 8 May 2018
      Source:Journal of Applied Mathematics and Mechanics
      Author(s): I.A. Soldatenkov
      An analytical solution of the problem on the wear of a punch sliding on a thin elastic strip under the condition that they are in complete contact is given for variable friction and wear coefficients. The particular case of a wavy punch (periodic problem) is considered. Some distinguishing features of the process of wear in the transient regime are revealed. It is established, for example, that the contact pressure distribution curve can have a narrow local maximum (peak), significantly exceeding the average level of the contact pressure in magnitude.

      PubDate: 2018-05-29T07:15:07Z
      DOI: 10.1016/j.jappmathmech.2018.03.019
       
  • Optimization of the flight trajectory of a non-manoeuvrable aircraft to
           minimize fuel consumption by the dynamic programming method
    • Authors: N.M. Grevtsov; S.A. Kumakshev; A.M. Shmatkov
      Abstract: Publication date: Available online 7 May 2018
      Source:Journal of Applied Mathematics and Mechanics
      Author(s): N.M. Grevtsov, S.A. Kumakshev, A.M. Shmatkov
      Using Bellman's dynamic programming method, a fuel-consumption optimum flight trajectory of a typical mid-range aircraft is constructed for a prescribed range. The optimum trajectory was calculated for the full model of motion of the aircraft along a trajectory in a vertical plane. Optimization was realized simultaneously for the whole trajectory without decomposing the process into individual steps. The method made it possible to take into account all restrictions imposed both by technical peculiarities of the aircraft and also by other requirements – safety and comfort of the passengers.

      PubDate: 2018-05-29T07:15:07Z
      DOI: 10.1016/j.jappmathmech.2018.03.004
       
  • The stability of the motion of a non-axisymmetric body in a resistive
           medium
    • Authors: K. Yu. Osipenko
      Abstract: Publication date: Available online 7 May 2018
      Source:Journal of Applied Mathematics and Mechanics
      Author(s): K. Yu. Osipenko
      A mathematical model of the plane motion of a non-axisymmetric body in a resistive medium is constructed using the local interaction method. Criteria for the stability of rectilinear motion are obtained in a general form in the case of a frozen axial velocity. The stability of the motion of a regular triangular pyramid is investigated in detail when a constant friction and pressure, specified using an empirical Poncelet formula in the form of a sum of inertial and strength terms, acts on its lateral surface. The stabilities of a pyramid and a cone are compared. The effect of deceleration on the stability of the rectilinear motion is considered.

      PubDate: 2018-05-29T07:15:07Z
      DOI: 10.1016/j.jappmathmech.2018.03.014
       
  • Energy spectrum of turbulent velocity pulsations in a wide range of wave
           numbers (renorm-group approach)
    • Authors: E.V. Teodorovich
      Abstract: Publication date: Available online 7 May 2018
      Source:Journal of Applied Mathematics and Mechanics
      Author(s): E.V. Teodorovich
      Based on the concept of cascade mechanism of energy transfer over the wave-number spectrum and related to the locality property of intermodal interactions forming the energy spectrum, the unified formula for spectral energy density is obtained that is valid in a wide range of wave numbers including both inertial and dissipation ranges. The form of the spectrum is governed by three parameters, namely, a value of wave number chosen as the normalization point assigned to the edge of the domain of the stochasticity emergence due to the development of instability of large-scale flows and the turbulent energy production, the spectral energy flux through the boundary of energy production domain in the wave-number space (the energy pumping rate), and the fluid kinematic viscosity.

      PubDate: 2018-05-29T07:15:07Z
      DOI: 10.1016/j.jappmathmech.2018.03.013
       
  • Internal gravity waves excited by a pulsating perturbation source
    • Authors: V.V. Bulatov; Yu.V. Vladimirov
      Abstract: Publication date: Available online 7 May 2018
      Source:Journal of Applied Mathematics and Mechanics
      Author(s): V.V. Bulatov, Yu.V. Vladimirov
      The problem of an internal gravity wave field from a pulsating point source of perturbations in the flow of a stratified medium of finite depth with horizontal velocity of the source V less than the maximum value of the group velocity of the internal gravity waves c is considered, unlike to the previously considered case V > c. Constructed asymptotic solutions make it possible to describe the amplitude-phase characteristics of individual modes comprising the full field of internal gravity waves. The excited waves consist of waves of two types: ring-like waves and wedge-shaped waves. Features of the mode structure of the excited fields are considered as functions of the parameters of the stratified medium and the characteristics of the perturbation source.

      PubDate: 2018-05-29T07:15:07Z
      DOI: 10.1016/j.jappmathmech.2018.03.006
       
  • Matrix method of constructing the differential equations of motion of an
           exoskeleton and its control
    • Authors: A.V. Borisov; G.M. Rozenblat
      Abstract: Publication date: Available online 7 May 2018
      Source:Journal of Applied Mathematics and Mechanics
      Author(s): A.V. Borisov, G.M. Rozenblat
      Two mathematical models of rods of variable length from which an exoskeleton can be created, providing comfortable movement of a human in it owing to duplication of the properties of a motion-support apparatus, are considered. Their structure is elucidated on the basis of an analysis of the differential equations of motion, allowing for representing them in vector-matrix form. General regularities of the construction of the matrix elements entering into the system of differential equations of motion are established and generalizing formulae for the matrix elements are obtained. A new matrix method of constructing the differential equations of motion is presented and illustrated by a specific example. This system of equations is solved numerically. The possibility of reinforcing the control actions for control of the exoskeleton motion with a human inside it is considered.

      PubDate: 2018-05-29T07:15:07Z
      DOI: 10.1016/j.jappmathmech.2018.03.002
       
  • Application of the theory of reversible discontinuities to the
           investigation of equations describing waves in tubes with elastic walls
    • Authors: I.B. Bakholdin
      Abstract: Publication date: Available online 7 May 2018
      Source:Journal of Applied Mathematics and Mechanics
      Author(s): I.B. Bakholdin
      Equations which describe the propagation of waves in tubes with elastic walls are investigated, methods for calculating them are developed, and solutions containing reversible discontinuity structures are analysed in the case of a fluid-filled tube. The model of a tube with elastic walls constructed on the basis of the complete model of a membrane and the non-linear theory of elasticity is generalized. The viscosity and compressibility of the material, the possibility of filling the tube with a gas, and the flexural rigidity of the tube walls are taken into account. The problem of the decay of an arbitrary discontinuity is solved numerically in the case of a fluid-filled tube. The results obtained correspond to the previously developed theory of reversible discontinuities. Simplified hyperbolic equations of long waves, as well as equations for small-amplitude waves which do not take into account longitudinal elastic waves and are similar to the Boussinesq equations, are derived for cases when a tube is filled with a liquid and a gas. The possibility of overturning of the waves is analysed. A procedure for correcting the numerical schemes by adding terms with high-order derivatives to the equations is developed, and the order of approximation of the numerical scheme remains unchanged, enabling the performance of calculations with low schematic dissipation.

      PubDate: 2018-05-29T07:15:07Z
      DOI: 10.1016/j.jappmathmech.2018.03.009
       
  • Steady rotations of a satellite with internal elastic and dissipative
           forces
    • Authors: N.I. Amelkin; V.V. Kholoshchak
      Abstract: Publication date: Available online 7 May 2018
      Source:Journal of Applied Mathematics and Mechanics
      Author(s): N.I. Amelkin, V.V. Kholoshchak
      Lavrent’ev's model (a satellite is simulated by a rigid shell with a spherical damper) is used to study the effect of internal forces on the motion of a satellite in a central gravitational field assuming that both dissipative and elastic internal forces arise with relative displacements of the damper. All the steady rotations are determined within the framework of this model for a dynamically symmetric satellite in a circular orbit and their stability is investigated as a function of the values of the damping and stiffness coefficients.

      PubDate: 2018-05-29T07:15:07Z
      DOI: 10.1016/j.jappmathmech.2018.03.011
       
 
 
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