Journal of Solid Mechanics and Materials Engineering最新文献_第10页

Determination of the Effective Parameters for Perforated Functionally Graded Plates with Polygonal Cutout by Analytical Solution 用解析解确定带多边形切口的穿孔功能梯度板的有效参数

Journal of Solid Mechanics and Materials Engineering Pub Date : 2020-03-01 DOI: 10.22034/JSM.2019.584898.1395

M. Jafari, M. H. B. Chaleshtari, H. Abdolalian

引用次数: 2

Hygrothermal Creep and Stress Redistribution Analysis of Temperature and Moisture Dependent Magneto-Electro-Elastic Hollow Sphere 温湿相关磁电弹性空心球的湿热蠕变及应力重分布分析

Journal of Solid Mechanics and Materials Engineering Pub Date : 2020-03-01 DOI: 10.22034/JSM.2019.582849.1371

M. Saadatfar

{"title":"Hygrothermal Creep and Stress Redistribution Analysis of Temperature and Moisture Dependent Magneto-Electro-Elastic Hollow Sphere","authors":"M. Saadatfar","doi":"10.22034/JSM.2019.582849.1371","DOIUrl":"https://doi.org/10.22034/JSM.2019.582849.1371","url":null,"abstract":"In this article, the time-dependent stress redistribution analysis of magneto-electro-elastic (MEE) thick-walled sphere subjected to mechanical, electrical, magnetic and uniform temperature gradient as well as moisture concentration gradient is presented. Combining constitutive equations of MEE with stress-strain relations as well as strain-displacement relations results in obtaining a differential equation in which there are the creep strains. At the first step, discounting creep strains in the mentioned equation, an analytical solution for the hygro-thermo-magneto-electro-elastic behavior is achieved at the initial state. After that, the creep stress rates can be achieved by keeping only the creep strains in the differential equation for the steady-state condition. The analysis is done by applying the Prandtl-Reuss equations as well as Norton’s law in creep behavior modeling. Finally, the history of stresses, displacement as well as magnetic and potential field, at any time, is achieved using an iterative method. Results show that the increase in tensile hoop stress resulted from creep progress must be considered in design progress. Also, the effect of hygrothermal loading is more extensive after creep evolution.","PeriodicalId":17126,"journal":{"name":"Journal of Solid Mechanics and Materials Engineering","volume":"43 1","pages":"57-71"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73807439","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

Method of Green’s Function for Characterization of SH Waves in Porous-Piezo Composite Structure with a Point Source 点源多孔压电复合材料结构中SH波的格林函数表征方法

Journal of Solid Mechanics and Materials Engineering Pub Date : 2020-03-01 DOI: 10.22034/JSM.2019.583053.1372

S. Karmakar, S. A. Sahu, S. Nirwal

{"title":"Method of Green’s Function for Characterization of SH Waves in Porous-Piezo Composite Structure with a Point Source","authors":"S. Karmakar, S. A. Sahu, S. Nirwal","doi":"10.22034/JSM.2019.583053.1372","DOIUrl":"https://doi.org/10.22034/JSM.2019.583053.1372","url":null,"abstract":"An approach of Green’s function is adopted to solve the inhomogeneous linear differential equations representing wave equations in piezo-composite materials. In particular, transference of horizontally polarised shear (SH) waves is considered in bedded structure comprising of porous-piezo electric layer lying over a heterogeneous half-space. Propagation of SH-waves is considered to be influenced by point source, situated in the heterogeneous substrate. A closed form analytical solution is obtained to establish the dispersion relation. Remarkable influence of different parameters (like elastic constant, piezoelectric constant, heterogeneity parameter, initial stress and layers thickness) on the phase and group velocity are shown graphically. Moreover, a special case of present study is shown by replacing the porous piezoelectric material with piezoelectric material. Some numerical examples are illustrated by taking the material constants of Lead Zirconate Titanate (PZT-1, PZT-5H and PZT-7) for the porous piezoelectric layer where the phase velocity of SH waves is high rather than that of piezoelectric layer.","PeriodicalId":17126,"journal":{"name":"Journal of Solid Mechanics and Materials Engineering","volume":"96 2 1","pages":"72-89"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87690058","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

An Axisymmetric Torsion Problem of an Elastic Layer on a Rigid Circular Base 刚性圆基上弹性层的轴对称扭转问题

Journal of Solid Mechanics and Materials Engineering Pub Date : 2020-03-01 DOI: 10.22034/JSM.2019.1868197.1441

B. Kebli, S. Berkane, F. Guerrache

引用次数: 3

Vibration Analysis of Rotary Tapered Axially Functionally Graded Timoshenko Nanobeam in Thermal Environment 旋转锥形轴向功能梯度Timoshenko纳米梁在热环境中的振动分析

Journal of Solid Mechanics and Materials Engineering Pub Date : 2020-03-01 DOI: 10.22034/JSM.2019.563759.1273

N. Shafiei, M. Hamisi, M. Ghadiri

引用次数: 7

Free Vibration Analysis of Nonlinear Circular Plates Resting on Winkler and Pasternak Foundations 温克勒和帕斯捷尔纳克基础非线性圆板自由振动分析

Journal of Solid Mechanics and Materials Engineering Pub Date : 2020-03-01 DOI: 10.22034/JSM.2019.1866236.1423

M. Sobamowo, S. Salawu

引用次数: 0

A New Three-Dimensional Sector Element for Circular Curved Structures Analysis 一种新的用于圆弯曲结构分析的三维扇形单元

Journal of Solid Mechanics and Materials Engineering Pub Date : 2020-03-01 DOI: 10.22034/JSM.2019.1867106.1430

H. E. Khiouani, L. Belounar, M. Houhou

引用次数: 6

A Comparative Study of Tooth Wear, Mechanical Power Losses and Efficiency in Normal and High Contact Ratio Asymmetric Spur Gears 普通和高接触比非对称直齿齿轮的齿磨损、机械功率损失和效率比较研究

Journal of Solid Mechanics and Materials Engineering Pub Date : 2020-03-01 DOI: 10.22034/JSM.2019.579286.1354

R. Sekar

{"title":"A Comparative Study of Tooth Wear, Mechanical Power Losses and Efficiency in Normal and High Contact Ratio Asymmetric Spur Gears","authors":"R. Sekar","doi":"10.22034/JSM.2019.579286.1354","DOIUrl":"https://doi.org/10.22034/JSM.2019.579286.1354","url":null,"abstract":"The surface tooth wear which occurs at the gear contact region due to inadequate contact strength of the tooth is one of the predominant modes of gear failures. Currently, higher contact ratio spur gears are increasingly used in power transmission applications such as aircraft, wind turbine, automobiles and compact tracked vehicles due to their high load carrying capacity. In this work, the direct design is found to be one of the efficient gear design methods to reduce the tooth surface wear on high contact ratio asymmetric spur gears. Asymmetric gear tooth is defined as one whose tooth geometry of the drive and coast sides is not symmetric. Asymmetry between tooth sides is achieved by providing two different pressure angles at the respective coast and drive side pitch circles. The area of existence diagrams for normal and high contact ratio gears have been developed to select suitable design solution with the given variables of gear ratio, contact ratio and teeth number. The contact load capacity, wear resistance, power losses and mechanical efficiency have also been deduced for directly designing normal and high contact ratio asymmetric spur gears.","PeriodicalId":17126,"journal":{"name":"Journal of Solid Mechanics and Materials Engineering","volume":"3 1","pages":"148-164"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74905905","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

Natural Frequency of Rotating Single-Walled Carbon Nanotubes with Considering Gyroscopic Effect 考虑陀螺效应的旋转单壁碳纳米管的固有频率

Journal of Solid Mechanics and Materials Engineering Pub Date : 2020-03-01 DOI: 10.22034/JSM.2019.1866624.1424

A Fatahi-Vajari, Z. Azimzadeh

{"title":"Natural Frequency of Rotating Single-Walled Carbon Nanotubes with Considering Gyroscopic Effect","authors":"A Fatahi-Vajari, Z. Azimzadeh","doi":"10.22034/JSM.2019.1866624.1424","DOIUrl":"https://doi.org/10.22034/JSM.2019.1866624.1424","url":null,"abstract":"This paper investigates the bending vibration of rotating single-walled carbon nanotubes (SWCNTs) based on nonlocal theory. To this end, the rotating SWCNTs system modeled as a beam with a circular cross section and the Euler-Bernoulli beam theory (EBT) is applied with added effects such as rotary inertia, gyroscopic effect and rotor mass unbalance. Using nonlocal theory, two coupled sixth order partial differential equations that govern the vibration of rotating SWCNTs are derived. To obtain the natural frequency and dynamic response of the nanorotor system, the equation of motion for the rotating SWCNTs are solved. It is found that there are two frequencies in the frequency spectrum. The positive rootintroduced as forward whirling mode, while the negative root represents backward whirling mode. The detailed mathematical derivations are presented while the emphasis is placed on investigating the effect of the several parameters such as, tube radius, angular velocity and small scale parameter on the vibration behavior of rotating nanotubes. It is explicitly shown that the vibration of a spinning nanotube is significantly influenced by these effects. To validate the accuracy and efficiency of this work, the results obtained herein are compared with the existing theoretical and experimental results and good agreement is observed. To the knowledge of authors, the vibration of rotating SWCNTs considering gyroscopic effect has not investigated analytically yet and then the results generated herein can be served as a benchmark for future works.","PeriodicalId":17126,"journal":{"name":"Journal of Solid Mechanics and Materials Engineering","volume":"142 1","pages":"136-147"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85340416","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

Pull-In Instability of MSGT Piezoelectric Polymeric FG-SWCNTs Reinforced Nanocomposite Considering Surface Stress Effect 考虑表面应力效应的MSGT压电聚合物FG-SWCNTs增强纳米复合材料的拉入不稳定性

Journal of Solid Mechanics and Materials Engineering Pub Date : 2019-12-30 DOI: 10.22034/JSM.2019.668611

A. G. Arani, B. R. Navi, M. Mohammadimehr, S. Niknejad, A. G. Arani, A. Hosseinpour

{"title":"Pull-In Instability of MSGT Piezoelectric Polymeric FG-SWCNTs Reinforced Nanocomposite Considering Surface Stress Effect","authors":"A. G. Arani, B. R. Navi, M. Mohammadimehr, S. Niknejad, A. G. Arani, A. Hosseinpour","doi":"10.22034/JSM.2019.668611","DOIUrl":"https://doi.org/10.22034/JSM.2019.668611","url":null,"abstract":"In this paper, the pull-in instability of piezoelectric polymeric nanocomposite plates reinforced by functionally graded single-walled carbon nanotubes (FG-SWCNTs) based on modified strain gradient theory (MSGT) is investigated. Various types of SWCNTs are distributed in piezoelectric polymeric plate and also surface stress effect is considered in this research. The piezoelectric polymeric nanocomposite plate is subjected to electro-magneto-mechanical loadings. The nonlinear governing equations are derived from Hamilton's principle. Then, pull-in voltage and natural frequency of the piezoelectric polymeric nanocomposite plates are calculated by Newton-Raphson method. There is a good agreement between the obtained and other researcher results. The results show that the pull-in voltage and natural frequency increase with increasing of applied voltage, magnetic field, FG-SWCNTs orientation angle and small scale parameters and decrease with increasing of van der Waals and Casimir forces, residual surface stress constant. Furthermore, highest and lowest pull-in voltages are belonging to FG-X and FG-O distribution types of SWCNTs.","PeriodicalId":17126,"journal":{"name":"Journal of Solid Mechanics and Materials Engineering","volume":"2 1","pages":"759-777"},"PeriodicalIF":0.0,"publicationDate":"2019-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86533337","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