Journal of Solid Mechanics and Materials Engineering最新文献

Large Deformation Hermitian Finite Element Coupled Thermoelasticity Analysis of Wave Propagation and Reflection in a Finite Domain 有限域中波传播与反射的大变形厄米有限元耦合热弹性分析

Journal of Solid Mechanics and Materials Engineering Pub Date : 2021-12-30 DOI: 10.22034/JSM.2020.1913430.1653

M. Mirparizi, M. Shariyat, A. Fotuhi

{"title":"Large Deformation Hermitian Finite Element Coupled Thermoelasticity Analysis of Wave Propagation and Reflection in a Finite Domain","authors":"M. Mirparizi, M. Shariyat, A. Fotuhi","doi":"10.22034/JSM.2020.1913430.1653","DOIUrl":"https://doi.org/10.22034/JSM.2020.1913430.1653","url":null,"abstract":"In the present paper, a finite element nonlinear coupled thermoelasticity formulation is presented for analysis of the wave propagation, reflection, and mixing phenomena in the finite length isotropic solids. The governing equations are derived based on the second Piola-Kirchhoff stress and the full form of Green’s strain-displacement tensors to account for the large deformations and finite strains. In contrast to the available researches, the assumption of very small temperature changes compared to the reference temperature is released in the present research. Galerkin’s method, a weak formulation, and cubic elements are employed to obtain the time-dependent non-linear finite element governing equations. The proposed solution procedure to the resulting highly nonlinear and time-dependent governing equations employs an updating algorithm and Newmark’s numerical time integration method. The wave propagation and reflection phenomena are investigated for both the mechanical and thermal shocks and time variations of distributions of the resulting displacements, temperature rises, and stresses are illustrated graphically and discussed comprehensively. Furthermore, the effects of the non-linear terms are discussed comprehensively. Results reveal that in the non-linear analysis, no fixed speed of wave propagation can be defined.","PeriodicalId":17126,"journal":{"name":"Journal of Solid Mechanics and Materials Engineering","volume":"22 1","pages":"485-502"},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89431598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Dispersion of SH-Wave in a Heterogeneous Orthotropic Layer Sandwiched Between an Inhomogeneous Semi-Infinite Medium and a Heterogeneous Elastic Half-Space 夹在非均匀半无限介质和非均匀弹性半空间之间的非均匀正交各向异性层中sh波的色散

Journal of Solid Mechanics and Materials Engineering Pub Date : 2021-12-30 DOI: 10.22034/JSM.2021.1876032.1479

R. M. Prasad, S. Kundu

{"title":"Dispersion of SH-Wave in a Heterogeneous Orthotropic Layer Sandwiched Between an Inhomogeneous Semi-Infinite Medium and a Heterogeneous Elastic Half-Space","authors":"R. M. Prasad, S. Kundu","doi":"10.22034/JSM.2021.1876032.1479","DOIUrl":"https://doi.org/10.22034/JSM.2021.1876032.1479","url":null,"abstract":"The aim of this paper is to investigates the existence of the dispersion of SH-wave in a heterogeneous orthotropic layer lying over a heterogeneous elastic half-space and underlying an inhomogeneous semi-infinite medium. Hyperbolic variation in upper semi-infinite associated with directional rigidities and density has been considered while linear variation in the intermediate layer associated with initial stress, density, shear moduli and lower half-space associated with rigidity and density has been considered. The dispersion equation of SH-wave has been obtained in a closed form by using variable separation method. The effects of inhomogeneities of the assumed media are illustrated by figures using MATLAB programming. The Earth's composition is heterogeneous that incorporates extremely hard layers. The propagation of SH-wave across crustal layer of the Earth very much depends upon heterogeneity and orthotropic properties. In fact, the observation reveals that the phase velocity of SH-wave is directly proportionate to inhomogeneity parameter, orthotropic parameter and heterogeneity parameter. That means as inhomogeneity parameter and heterogeneity orthotropic parameter increases, the phase velocity of SH-wave increases proportionately. Moreover, the obtained dispersion equation of SH-wave coincides with the classical result of Love wave as initial stress, inhomogeneities, and the upper semi-infinite medium is neglected. This analysis may be helpful to expound the nature of the dispersion of seismic waves in elastic media.","PeriodicalId":17126,"journal":{"name":"Journal of Solid Mechanics and Materials Engineering","volume":"72 1","pages":"413-426"},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84022605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Multi-Objective Optimization of Shot-Peening Parameters Using Modified Taguchi Technique 基于改进田口法的喷丸强化参数多目标优化

Journal of Solid Mechanics and Materials Engineering Pub Date : 2021-10-02 DOI: 10.22034/JSM.2020.1908867.1641

M. Hassanzadeh, S. A. M. Torshizi

{"title":"Multi-Objective Optimization of Shot-Peening Parameters Using Modified Taguchi Technique","authors":"M. Hassanzadeh, S. A. M. Torshizi","doi":"10.22034/JSM.2020.1908867.1641","DOIUrl":"https://doi.org/10.22034/JSM.2020.1908867.1641","url":null,"abstract":"Shot-peening is a surface treatments utilized extensively in the industry to enhance the performance of metal parts against fatigue. This paper aimed to find the optimal parameters of the shot-peening process based on the finite elements model and the Taguchi method. The effects of three peening parameters (shot diameter, shot velocity, coverage percentage) are investigated on residual stress and roughness using Taguchi method. A new Taguchi technique is proposed by combining it with desirability function to optimize the shot-peening parameters that simultaneously provide two or more responses in an optimal mode. The results show that the coverage percentage has the most influence on the surface stress and maximum compressive stress whereas the velocity and diameter of the shot are the most effective parameters on the depth of compression stress. The shot velocity is the main factor of the surface roughness due to the shot peening. Through the proposed structure, optimal conditions can be obtained for surface stress and roughness simultaneously with high-coverage and low-velocity. Eventually, results reveal the effectiveness of the proposed strategy in stand point of saving time and cost.","PeriodicalId":17126,"journal":{"name":"Journal of Solid Mechanics and Materials Engineering","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90995298","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Free Torsional Vibration Analysis of Hollow and Solid Non-Uniform Rotating Shafts Using Distributed and Lumped Modeling Technique 基于分布和集总建模技术的空心和固体非均匀转轴自由扭振分析

Journal of Solid Mechanics and Materials Engineering Pub Date : 2021-10-02 DOI: 10.22034/JSM.2021.1899087.1591

A. Saghafi, M. .. Azizi

引用次数: 0

Dynamic Response of Bi-Directional Functionally Graded Materials (BDFGMs) Beams Rested on Visco-Pasternak Foundation Under Periodic Axial Force 周期性轴力作用下粘性-帕斯捷尔纳克基础上双向功能梯度材料梁的动力响应

Journal of Solid Mechanics and Materials Engineering Pub Date : 2021-09-30 DOI: 10.22034/JSM.2020.678358

A. G. Arani, S. Niknejad, A. A. Arani

{"title":"Dynamic Response of Bi-Directional Functionally Graded Materials (BDFGMs) Beams Rested on Visco-Pasternak Foundation Under Periodic Axial Force","authors":"A. G. Arani, S. Niknejad, A. A. Arani","doi":"10.22034/JSM.2020.678358","DOIUrl":"https://doi.org/10.22034/JSM.2020.678358","url":null,"abstract":"Since the temperature or stress distribution in some advanced machines such as modern aerospace shuttles and craft develops in two or three directions, the need for a new type of FGMs is felt whose properties vary in two or three directions. On the other hand, dynamic buckling behavior of structures is a complicated phenomenon which should be investigated through the response of equations of motion. In this paper, dynamic response of beams composed of bi-directional functionally graded materials (BDFGMs) rested on visco-Pasternak foundation under periodic axial force is investigated. Material properties of BDFGMs beam vary continuously in both the thickness and longitudinal directions based on the two types of analytical functions (e.g. exponential and power law distributions). Hamilton's principle is employed to derive the equations of motion of BDFGMs beam according to the Euler-Bernoulli and Timoshenko beam theories. Then, the generalized differential quadrature (GDQ) method in conjunction with the Bolotin method is used to solve the differential equations of motion under different boundary conditions. It is observed that a good agreement between the present work and the literature result. Various parametric investigations are performed for the effects of the gradient index, length-to-thickness ratio and viscoelastic foundation coefficients on the dynamic stability region of BDFGMs beam. The results show that the influence of gradient index of material properties along the thickness direction is greater than gradient index along the longitudinal direction on the dynamic stability of BDFGMs beam for both exponential and power law distributions.","PeriodicalId":17126,"journal":{"name":"Journal of Solid Mechanics and Materials Engineering","volume":"49 1","pages":"269-285"},"PeriodicalIF":0.0,"publicationDate":"2021-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90314585","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Memory Response in Thermoelastic Plate with Three-Phase-Lag Model 基于三相滞后模型的热弹性板记忆响应

Journal of Solid Mechanics and Materials Engineering Pub Date : 2021-09-30 DOI: 10.22034/JSM.2021.1902285.1611

S. Biswas

引用次数: 0

Investigation of Stress State of the Layered Composite with a Longitudinal Cylindrical Cavity 纵向圆柱腔层状复合材料的应力状态研究

Journal of Solid Mechanics and Materials Engineering Pub Date : 2021-09-30 DOI: 10.22034/JSM.2021.1879427.1502

V. Miroshnikov

引用次数: 0

Free Vibration Analysis of Composite Grid Stiffened Cylindrical Shells Using A Generalized Higher Order Theory 基于广义高阶理论的复合网格加筋圆柱壳自由振动分析

Journal of Solid Mechanics and Materials Engineering Pub Date : 2021-09-30 DOI: 10.22034/JSM.2020.1889563.1535

H. M. Panahiha, A. Davar, M. Beni, J. E. Jam

引用次数: 0

Experimental and Numerical Investigation of the Impact of a Blunt Projectile with a Perforated Plate 钝弹与穿孔板碰撞的实验与数值研究

Journal of Solid Mechanics and Materials Engineering Pub Date : 2021-09-30 DOI: 10.22034/JSM.2020.1897805.1580

Masoud Farahmand, K. Vahedi, A. N. Oskouei, R. Hosseini

{"title":"Experimental and Numerical Investigation of the Impact of a Blunt Projectile with a Perforated Plate","authors":"Masoud Farahmand, K. Vahedi, A. N. Oskouei, R. Hosseini","doi":"10.22034/JSM.2020.1897805.1580","DOIUrl":"https://doi.org/10.22034/JSM.2020.1897805.1580","url":null,"abstract":"This paper experimentally and numerically investigated the impact of a blunt projectile to perforated steel targets. In this study, projectiles were made of AISI 52100 and perforated plates were made of AISI 1045. In order to investigate the effect of the hole diameter on the projectile, three different diameters of the hole were considered, along with the effect of the projectile overlap with the hole. After examining different hitting states, the projectile was deviated from its movement direction after hitting the hole and changed from vertical hit to skew. The deviation of the projectile increased when the diameter of the hole increased or the amount of projectile overlap with the hole increased. Then, numerical modeling of impacting the projectile was performed by ABAQUS software and the results were compared with experimental results and the accuracy of the model was confirmed. And this model was used to investigate the effect of initial projectile speed on deviation of the projectile, accordingly, an increase in the initial velocity of the impact led to an increase in the deviation of the projectile.","PeriodicalId":17126,"journal":{"name":"Journal of Solid Mechanics and Materials Engineering","volume":"7 1","pages":"338-348"},"PeriodicalIF":0.0,"publicationDate":"2021-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79006971","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study on Vibration Band Gap Characteristics of a Branched Shape Periodic Structure Using the GDQR 基于GDQR的支状周期结构振动带隙特性研究

Journal of Solid Mechanics and Materials Engineering Pub Date : 2021-09-30 DOI: 10.22034/JSM.2020.1878636.1496

M. Hajhosseini, A. Abshahi

{"title":"Study on Vibration Band Gap Characteristics of a Branched Shape Periodic Structure Using the GDQR","authors":"M. Hajhosseini, A. Abshahi","doi":"10.22034/JSM.2020.1878636.1496","DOIUrl":"https://doi.org/10.22034/JSM.2020.1878636.1496","url":null,"abstract":"In this study, a new periodic structure with special vibration band gap properties is introduced. This structure consists of a main beam and several cantilever beam elements connected to this main beam in the branched shape. Two models with different number of beam elements and geometrical parameters are considered for this periodic structure. The transverse vibrations of beams are solved using the generalized differential quadrature rule (GDQR) method to calculate the first four band gaps of each model. Investigating the influences of geometrical parameters on the band gaps shows that some bands are close to each other for specific ranges of geometrical parameters values. Furthermore, as the number of beam elements increases, the number of close band gaps increases. Having more than two close band gaps means that this periodic structure has a relatively wide band gap in total. Furthermore, this wide band can move to low frequency ranges by changing the geometrical parameters. Absorbing vibrations over a wide band gap at low frequency ranges makes this periodic structure a good vibration absorber. Verification of the analytical method using ANSYS software shows that the GDQR method can be used for vibration analysis of beam-like structures with high accuracy.","PeriodicalId":17126,"journal":{"name":"Journal of Solid Mechanics and Materials Engineering","volume":"23 1","pages":"286-296"},"PeriodicalIF":0.0,"publicationDate":"2021-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74912448","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0