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Journal of Strain Analysis for Engineering Design
Journal Prestige (SJR): 0.615  Citation Impact (citeScore): 1 Number of Followers: 6  Hybrid journal (It can contain Open Access articles)ISSN (Print) 0309-3247 - ISSN (Online) 2041-3130 Published by Sage Publications  [1176 journals]
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- Reflection and transmission phenomenon of plane waves at the interface of
diffusive viscoelastic porous rotating isotropic medium under hall current
and nonlocal thermoelastic porous solid-
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Authors: Farhat Bibi, Hashmat Ali
Abstract: The Journal of Strain Analysis for Engineering Design, Ahead of Print.
The response of elastic waves upon encountering the boundary between two elastic media is investigated in the present work. Whereas the top medium is thermoelastic isotropic porous, the below medium is thermoelastic rotating porous diffusive. There is an uncoupled transmitted SV-wave propagating through the medium, and the lower medium is rotating with some fixed angular frequency. When the incident wave hits the boundary, it produces four transmitted waves and five coupled quasi-reflected waves. The system is divided into longitudinal and transverse components using the Helmholtz decomposition theorem. Analytical computations of speed and reflection coefficients for transmitted and reflected waves are performed using LS theory. The outcomes are graphically represented for a particular material subject to nonlocal and fractional-order influences. Wave characteristics, such as speed and reflection coefficients for transmitted and reflected waves, are plotted versus angular frequency and angle of incidence using MATLAB programing. The conservation of energy has also been verified. In the absence of rotation, hall current, voids, viscoelasticity, and diffusion in the medium, the previous results in the literature are obtained.
Citation: The Journal of Strain Analysis for Engineering Design
PubDate: 2024-08-10T11:15:10Z
DOI: 10.1177/03093247241259818
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- The α-generalized implicit method associated with Potra–Pták iteration
for solving non-linear dynamic problems-
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Authors: Luiz Antonio Farani de Souza, Lucas Lauer Verdade
Abstract: The Journal of Strain Analysis for Engineering Design, Ahead of Print.
Generally, direct time integration procedures are used for solving the equations of motion in transient analysis of structures with large displacements. In this context, we propose an algorithm that combines the α-Generalized implicit integration method with the Potra–Pták two-step iterative scheme. The free Scilab program develops a computer code for the non-linear dynamic analysis of plane frames with large displacements and rotations. The FEM corotational formulation discretizes the structures considering the Euler-Bernoulli beam theory. The null-length connection element described by the axial, translational and rotational stiffnesses simulate the behavior of the beam-column connection. Jacobi’s method and the Scilab’s spec function determine the natural frequencies. The developed program is used for modal and transient dynamic analyses of frame problems available in the literature. The numerical results show that the Potra-Pták scheme obtains approximate solutions with fewer cumulative iterations until convergence and shorter processing time compared to the standard Newton-Raphson scheme. Further-more, the results show that the type of beam-column connection affects the vibratory behavior of the structure as well as the values of its natural frequencies.
Citation: The Journal of Strain Analysis for Engineering Design
PubDate: 2024-07-27T06:19:10Z
DOI: 10.1177/03093247241263639
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- Eliminating eccentricity error in measuring residual stresses via
hole-drilling method using strain gauge rosette with five measuring grids:
For thin plates using through-holes-
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Authors: Ying Gu, Jiaojiao Chen, Song Gu, Chao Kong, Songbo Ren, Yixiang Du
Abstract: The Journal of Strain Analysis for Engineering Design, Ahead of Print.
In the measurement of residual stresses (RSs) via the hole-drilling method, the error induced by the eccentricity of the drilled hole is inevitable and non-negligible in some cases. In this study, both the eccentricity coordinates and RS state (two principal stresses and one principal angle) are considered unknowns that must be solved. A set of five equations is required to determine these five unknowns. Therefore, two additional measuring grids are added to the strain gauge comprising three grids, which is typically used in measuring RSs. Consequently, a novel strain gauge rosette with five measuring grids (SGR-5MG) is created. Subsequently, an algorithm associated with the SGR-5MG is developed to solve the five unknowns based on the Newton–Raphson method. The algorithm is elasticity-based and derived according to the layout of the SGR-5MG. Finally, the proposed method is verified numerically and experimentally. The results show that (1) the eccentricity error is up to 35.1% when the eccentricity reaches 0.05D, where D represents the diameter of the gauge circle; (2) Using the proposed method, the error can be significantly reduced to 7.2%; (3) The elasticity-based proposed method cannot make the predicted results exactly converge to the actual stresses in predicting high stresses because of the plasticity deformation around the hole. The eccentricity error can be reduced significantly by using the proposed method based on the SGR-5MG.
Citation: The Journal of Strain Analysis for Engineering Design
PubDate: 2024-07-26T12:56:55Z
DOI: 10.1177/03093247241262178
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- Predictive modeling of spring-back in pre-punched sheet roll forming using
machine learning-
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Authors: Ali Zeinolabedin-Beygi, Hassan Moslemi Naeini, Hossein Talebi-Ghadikolaee, Amir Hossein Rabiee, Saeid Hajiahmadi
Abstract: The Journal of Strain Analysis for Engineering Design, Ahead of Print.
This study outlines an experimental and computational endeavor aimed at developing a machine learning model to estimate spring-back values utilizing the decision tree methodology. A design of experiment approach was employed to collect a dataset, and based on the experimental results, a precise model was constructed to predict spring-back values. The model considered parameters such as thickness, diameter of circle hole, distance between the center hole and flange edge, and hole spacing. Various hyper parameters, including max depth and minimum samples for split, were explored, with configurations such as (30,5), (20,8), and (10,2) being evaluated to identify the optimal model for spring-back prediction. Analysis of the results demonstrated that the decision tree models accurately estimated spring-back values in cold roll forming of pre-punched sheets based on the input parameters. The coefficient of determination in the test section for decision tree models with parameters (30,5), (20,8), and (10,2) was found to be 0.90, 0.98, and 0.96, respectively. Additionally, the percentage of absolute error in the test section for the same decision tree models was calculated as 8.84%, 6.18%, and 7.6%, respectively.
Citation: The Journal of Strain Analysis for Engineering Design
PubDate: 2024-07-26T01:01:36Z
DOI: 10.1177/03093247241263685
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- Creep damage assessment of HR3C austenitic steel by using misorientation
parameters derived from EBSD technique-
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Authors: Gaole Hong, Na Risu, Fubao Zhang, Maoxun Sun, Yue Zhang, Xiao Wang
Abstract: The Journal of Strain Analysis for Engineering Design, Ahead of Print.
The evaluation ability of misorientation parameters and Kikuchi band parameters on creep damage of HR3C austenitic steel is reported in this paper. HR3C steel samples were subjected to the creep process for 475, 756, 1240, and 1300 h, respectively. During the creep process, the average kernel average misorientation (KAM) and grain reference orientation deviation (GROD) increased significantly overall as the creep time increased, while the average mean angle deviation (MAD) and band contrast (BC) did not show significant changes. When comparing GROD and KAM, it was found that the variation range of GROD is larger and the variation trend is monotonous, making GROD more suitable for evaluating the creep damage of HR3C steel. Subsequently, the physical mechanism of GROD is derived and studied.
Citation: The Journal of Strain Analysis for Engineering Design
PubDate: 2024-07-23T10:46:53Z
DOI: 10.1177/03093247241260900
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- Dynamic calculation of stress influence law of rubber core sealing surface
of the rotating blowout preventer with defects-
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Authors: Zhaoming Zhou, Bingsen He, Yundong Xu, Hui Liu, Zhong Zeng
Abstract: The Journal of Strain Analysis for Engineering Design, Ahead of Print.
The bubble and crack defects in the production and operation of the rubber core of the rotating blowout preventer (RBOP) easily cause fatigue failure, leading to well-controlled severe accidents. Based on Yeoh’s principal structure equation, the dynamic sealing model of rubber core was established in this paper. The sealing process of the rubber core in lifting and drilling was calculated and analyzed. The stress influence law of typical cracks and bubble defects that affect the fatigue failure of rubber core sealing surface was analyzed. The results are as follows: (1) When the drill pipe joint passes through the RBOP, the structure of the rubber core is significantly deformed. This stage may cause damage and failure of the rubber core. (2) The cracks and bubble defects lead to a decrease in the stability of the sealing surface. With the increase of stress at the defect, the crack of the rubber core is easy to expand. (3) In the same location of the rubber core defects, cracks compared to bubble defects have a more significant impact. For the same type of crack, the bottom left side (A1) and the outer surface underside (D1) crack reduce the stress at the position of the rubber core sealing surface to the maximum. The research results provide a reference basis for defect detection, sealing performance, and service life of rubber cores, in order to improve the reliability evaluation standards of blowout preventer rubber cores, improve well control safety, reduce the occurrence of safety accidents, and improve operational efficiency.
Citation: The Journal of Strain Analysis for Engineering Design
PubDate: 2024-06-19T07:03:24Z
DOI: 10.1177/03093247241259111
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- Free vibration and buckling behavior of porous P-type FGM and S-type FGM
circular plates on elastic foundation under non-uniform thermal field-
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Authors: Weibin Wang, Gang Xue, Feipeng Lei, Zhaochun Teng
Abstract: The Journal of Strain Analysis for Engineering Design, Ahead of Print.
In this paper, in order to satisfied the design and manufacturing requirements of functional materials, an investigation is carried out to study the free vibration and thermal buckling characteristics of porous P- and S-type functionally graded materials (FGM) circular plates in non-uniform thermal fields in the context of first-order shear deformation theory. FGM is formed by gradient changes in metals and ceramics, the thermomechanical properties were characterized by a gradient along the thickness direction of the circular plate by a power-law function containing porosity correction. The differential equations of motion control are derived using the Hamiltonian variational principle, and the dimensionless equations of motion and boundary conditions are solved analytically by the DTM transformation procedure. The problem has been degraded and compared with the results of the existing literature to confirm its validity. In conclusion, the influence of each parameter on the dimensionless natural frequency of the porous FGM circular plate and the influence of relevant parameters on the critical temperature rise are calculated and evaluated. The porosity weakens the overall stiffness and equivalent mass of the structure, and the foundation enhances the stiffness. The DTM calculation iteration speed is fast, and the results are highly consistent. The results can be used to provide model guidance and data support for future studies of porous FGM circular plates as well as follow-up studies.
Citation: The Journal of Strain Analysis for Engineering Design
PubDate: 2024-06-19T07:00:21Z
DOI: 10.1177/03093247241257064
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- A novel dynamic stiffness matrix for the nonlocal vibration
characteristics of porous functionally graded nanoplates on elastic
foundation with small-scale effects-
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Authors: Saurabh Rai, Ankit Gupta
Abstract: The Journal of Strain Analysis for Engineering Design, Ahead of Print.
The present paper deals with the development of a dynamic stiffness matrix to evaluate the free vibration response of functionally graded nanoplate (FG-nP) resting on the Winkler-Pasternak elastic foundation. The complete mathematical modeling of the dynamic stiffness matrix for nanostructures is given for the first time. The equation of motion for rectangular FG-nP plates supported on an elastic foundation is derived using Hamilton’s principle in conjunction with nonlocal elasticity theory. The non-local theory is incorporated to account for the size effect in the small-scale plate. The effective material property of the porous FG-nP has been calculated using three recently developed models of porosity. The developed dynamic stiffness matrix is solved using the Wittrick-Williams algorithm to extract the natural frequencies of the FG-nP. The variation of natural frequencies with the change of numerical values, such as nonlocal parameter, aspect ratio, elastic foundation parameters, and porosity volume fraction is analyzed. The validity and accuracy of the results are confirmed through comparison with the available literature. The use of non-local theory in dynamic stiffness analysis is shown to be effective in predicting the natural frequency of the FG-nP on a Winkler-Pasternak elastic foundation, providing new insights into the dynamic behavior of small-scale structures.
Citation: The Journal of Strain Analysis for Engineering Design
PubDate: 2024-05-24T07:12:26Z
DOI: 10.1177/03093247241252199
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- 3D dynamic contact analysis of tyre internal deformation using 2D image
sensor-
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Authors: JongWook Lim, JongHwan Kim, Sung Jin Kim, KyeJoo Song, Seong Yun Kim
Abstract: The Journal of Strain Analysis for Engineering Design, Ahead of Print.
Due to the increasing weight of electric vehicles, advanced tyre technology is urgently needed. In particular, there is a need for dynamic contact analysis to determine the energy interaction between tyres and road surfaces. However, the methods developed to date are limited in that they require either numerous contact patches inside the tyre or sensor devices on the ground. In this study, we propose a new method for dynamic tyre-ground contact analysis that overcomes these limitations. By installing a two-dimensional image sensor inside the tyre, deformations can be observed and quantified three-dimensionally during vehicle operation. This method advances tyre engineering through innovative analysis of tyre deformation during operation.
Citation: The Journal of Strain Analysis for Engineering Design
PubDate: 2024-05-18T10:08:26Z
DOI: 10.1177/03093247241252497
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- Investigation of the effect of anisotropy on Generalized Forming Limit
Diagram-
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Authors: Mohammad Mehdi Ghane Shalmani, Ali Basti, Abolfazl Taherkhani
Abstract: The Journal of Strain Analysis for Engineering Design, Ahead of Print.
In contemporary industrial practices, various methods are employed to subject raw metal sheets to deformation in order to fabricate requisite components. These sheets exhibit a defined capacity for deformation during the forming process. Over recent decades, a plethora of experimental and numerical methodologies have emerged to ascertain these forming limits. Initially, a forming limit diagram (FLD) was devised, predicated on the phenomenon of necking, under the assumption that forming takes place under plane-stress conditions. However, in certain complex processes like hydroforming and incremental forming, necking can manifest at sites where normal and through-thickness shear stresses act upon the sheet in addition to the in-plane stresses, rendering the plane-stress assumption inadequate for predicting forming limits in such scenarios. Thus, it becomes imperative to derive a diagram that can accurately forecast forming limits in these processes. This study aims to establish a Generalized Forming Limit Diagram (GFLD) through numerical means. GFLDs were constructed utilizing two distinct yield functions, namely Von-Mises and Hill48, for isotropic and anisotropic states, respectively. The findings reveal that normal compressive stress and through-thickness shear strain augment the formability of sheet metals. Furthermore, the outcomes illustrate that accounting for anisotropy introduces variances between diagrams in some regions of the FLD curve while the discrepancies are minor within the central regions.
Citation: The Journal of Strain Analysis for Engineering Design
PubDate: 2024-05-08T12:03:36Z
DOI: 10.1177/03093247241244564
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- Random load identification of cylindrical shell structure based on
multi-layer neural network and support vector regression-
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Authors: Xinliang Yang, Yanfeng Guo, Yawen Chen, Jinwei Zhao, Longlei Dong, Yanjun Lü
Abstract: The Journal of Strain Analysis for Engineering Design, Ahead of Print.
A new-type identification method in the frequency domain by combining a multi-layer neural network and support vector regression is proposed to identify random load of a complex cylindrical shell structure. The kernel function of support vector regression has a great influence on the prediction accuracy of machine learning model, and it is effective to employ the linear function. As the penalty factor is large, the identification accuracy of the Gaussian kernel function is close to the linear kernel function. In the process of random load identification, the prediction accuracy of the neural network using the L-BFGS method is higher than the traditional Adam method. The number of hidden layers of the neural network has little effect on the L-BFGS algorithm, but a great effect on the Adam method. Different levels of noise are introduced to verify the robustness of the machine learning model. Both the support vector regression with linear kernel function and neural network model based on the L-BFGS method have strong robustness. For the noise percentage of 1%, the support vector regression has better prediction accuracy than the neural network, yet the case is contrary for the noise percentage greater than 5%. The verification shows that the neural network model trained by simulation data has better identification accuracy for real load at some frequencies. The load identification method is proposed based on the frequency points which may establish the machine learning model. The mean absolute percentage error shows that the method based on a multi-layer neural network and support vector regression has high identification accuracy.
Citation: The Journal of Strain Analysis for Engineering Design
PubDate: 2024-04-26T05:10:27Z
DOI: 10.1177/03093247241245185
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- A rotating magneto-photothermoelastic effect with moisture diffusivity of
nonlocal semiconductor medium-
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Authors: Merfat H Raddadi, Amr MS Mahdy, Alaa A El-Bary, Khaled Lotfy, Mohammed Allan
Abstract: The Journal of Strain Analysis for Engineering Design, Ahead of Print.
This study focuses on investigating the deformation of a one-dimensional elastic nonlocal semiconductor medium. The aim is to understand how the magnetic field and moisture diffusivity affect this deformation. The research aims to analyze the connection between plasma and moisture diffusivity processes in a rotational field, as well as thermo-elastic waves. The study examines the transport process of photo-thermoelasticity while considering the influence of moisture diffusivity. To derive the governing equations of the photo-thermo-elastic medium, Laplace’s transformation technique is used. These equations encompass the carrier density, elastic waves, moisture transport, heat conduction, and constitutive relationships. The fundamental physical parameters in the Laplace domain, such as mechanical stresses, thermal conditions, and plasma boundary conditions, are calculated. Numerical techniques are employed to invert the Laplace transform and obtain complete time-domain solutions for the various physical domains under investigation. The analysis takes into account reference moisture, nonlocality, magnetic field and rotation field. The effects of applied forces on displacement, moisture concentration, carrier density, stress resulting from forces, and temperature distribution are considered through graphical analysis.
Citation: The Journal of Strain Analysis for Engineering Design
PubDate: 2024-04-23T06:07:04Z
DOI: 10.1177/03093247241243109
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- Static, buckling, and free vibration responses of functionally graded
carbon nanotube-reinforced composite beams with elastic foundation in
non-polynomial framework-
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Authors: Abhijeet Babar, Rosalin Sahoo
Abstract: The Journal of Strain Analysis for Engineering Design, Ahead of Print.
In this work, the static, buckling, and free vibration analysis of functionally graded carbon nanotube-reinforced composite (FG-CNTRC) beam resting on a Pasternak elastic foundation are studied. The secant function-based shear deformation theory (SFSDT) is used for this analysis. This theory fulfills the traction-free boundary conditions at the top and bottom surfaces of the beam, hence there is no need for a shear correction factor. Hamilton’s principle is used to determine the governing differential equations and boundary conditions whereas Navier’s solution technique is used for determining the closed-form solution. The analytical approach is used to examine the deflection, stresses, critical buckling load, and natural frequencies of the FG-CNTRC beam resting on the Pasternak elastic foundation including a shear layer and Winkler springs. To determine the material characteristics of FG-CNTRC beams, the Rule of the mixture is used. Uniform distribution (UD-beam), FG-X beam, FG-O beam, and FG-V beam are the different forms of CNT reinforcement distribution that are used in this study. Considering different span thickness ratios, the volume fraction and distribution of CNT, the Winkler spring, and the shear layer constant factors, all the structural responses are predicted. It is also observed that the present theory predicts the structural responses of the FG-CNTRC beam accurately when compared to other existing theories. A few new results are also included as the benchmark solutions for the new research.
Citation: The Journal of Strain Analysis for Engineering Design
PubDate: 2024-04-10T08:15:09Z
DOI: 10.1177/03093247241234707
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- Progressive failure prediction of laminated composite thin skew plates
under transverse loading using nonlinear strains-
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Authors: Dona Chatterjee, Arghya Ghosh, Dipankar Chakravorty
Abstract: The Journal of Strain Analysis for Engineering Design, Ahead of Print.
A review of literature about industrially important composite skew plates, which are used as roofing and flooring units to cover non-rectangular parallelogram shaped plan areas, shows that the aspect of progressive failure has not received any attention from researchers which is essential to comprehensively understand failure behaviour from initiation to the ultimate stage. In the present approach stiffness degradation of a damaged plate is considered only at the point of damage in the corresponding lamina at all stages of first and progressive failure and the present outputs match excellently with published experimental results. This realistic modelling of failure behaviour is the novelty of this paper. Apart from reporting the failure load values, the failure zones and nature of damage progress on the skew plate surfaces are also presented which are expected to be valuable inputs for non-destructive health monitoring.
Citation: The Journal of Strain Analysis for Engineering Design
PubDate: 2024-03-30T09:28:14Z
DOI: 10.1177/03093247241240821
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- An artificial intelligence-based approach for identifying the in-plane
orthotropic mechanical properties of electronic circuit boards-
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Authors: Mohammad A Gharaibeh
Abstract: The Journal of Strain Analysis for Engineering Design, Ahead of Print.
The finite element modeling of electronic boards is a challenging task due to the complexity of the multi-component board structure. Hence, it is acceptable to attain equivalent orthotropic in-plane mechanical properties and use them throughout the finite element analysis (FEA) simulations. This paper aims to present an artificial intelligence-based methodology, using the artificial neural networks (ANNs), to estimate the in-plane mechanical properties of the printed circuit boards (PCB). In this methodology, the ANN technique used FEA data to find the relationship between the first 10 natural frequencies and the mechanical properties, that is, modulus of elasticity, Poisson’s ratio and the shear modulus, of the test board. Subsequently, the experimentally derived natural frequency data is then imported to the ANN model to identify the equivalent orthotropic properties. The ANN-predicted properties are plugged back into FEA and provided natural frequencies and mode shapes that are in great match with experimental results.
Citation: The Journal of Strain Analysis for Engineering Design
PubDate: 2024-03-29T05:39:58Z
DOI: 10.1177/03093247241240832
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- Experimental and numerical analysis of residual stresses induced by the
manufacturing process of longitudinal welded tubes-
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Authors: Christian Egger, Nicola Simon, Marco Lüchinger, Kerstin Kern, Michael Schreiner, Wolfgang Tillmann, Jens Gibmeier
Abstract: The Journal of Strain Analysis for Engineering Design, Ahead of Print.
In the present work, the process chain in tube production by roll forming of the steel 34MnB5 was examined in more detail. The process chain consisting of the steps (i) roll forming, (ii) HFI welding, and then (iii) straightening and final calibration was mapped using the finite element method. In addition to the pipe geometry, the residual stress distribution was considered as an essential target value for the assessment of the performance of the tubes under service conditions. The objective of the project is to describe the manufacturing process and thus the processing induced residual stress distributions as realistically as possible. For a more detailed characterization of the process and above all for the validation of the numerical simulations, experimental residual stress analyses were carried out for the final state of the tubes using complementary analysis methods. The contour method was used to determine the 2D-distribution of residual stresses across the transverse and longitudinal sections of the manufactured pipes. These measurements were supplemented by local residual stress analyses using the incremental hole drilling method and X-ray residual stress analyses. The work thus pursues both a methodical approach to the analysis of the internal stresses induced by the process using complementary methods and also a manufacturing approach to the analysis and evaluation of the production chain. In particular for the axial components of the residual stresses, it can be shown that experimentally determined residual stresses correlate well with the numerically calculated values. The contour method is excellently suited to monitor the uneven distribution of the internal stresses over the pipe cross-section. The results of the simulation show that the overall residual stress distribution that is determined using the contour method mainly results from the plastic strains introduced by the roll forming process. X-ray and hole drilling analyses are shown to be more suitable for measuring locally present residual stresses at defined positions on the outer tube surface. In this way it can be shown that the simulation approach described provides an accurate model of the process.
Citation: The Journal of Strain Analysis for Engineering Design
PubDate: 2024-03-18T06:01:39Z
DOI: 10.1177/03093247241234988
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