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Resonant Rotations of a Dynamically Symmetric Satellite with a Ball Damper in a Circular Orbit 带球阻尼器的动态对称卫星在圆形轨道上的共振旋转
IF 0.6 4区 工程技术
Mechanics of Solids Pub Date : 2024-11-01 DOI: 10.1134/S0025654424602908
N. I. Amelkin
{"title":"Resonant Rotations of a Dynamically Symmetric Satellite with a Ball Damper in a Circular Orbit","authors":"N. I. Amelkin","doi":"10.1134/S0025654424602908","DOIUrl":"10.1134/S0025654424602908","url":null,"abstract":"<p>For a satellite with a ball damper, the effect of internal dissipation on rotational motion in the central gravitational field is studied. The equations of rotational motion of a dynamically symmetric satellite with a ball damper in an elliptical orbit are obtained. For the case of a circular orbit, using the averaging method, spatial resonant rotations of a dynamically symmetrical satellite with a ball damper were studied.</p>","PeriodicalId":697,"journal":{"name":"Mechanics of Solids","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142565908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Instantaneous Heat Source Response in a Rotating Orthotropic Thermoelastic Medium Using Three-Phase-Lag Model 使用三相滞后模型的旋转正交热弹性介质中的瞬时热源响应
IF 0.6 4区 工程技术
Mechanics of Solids Pub Date : 2024-11-01 DOI: 10.1134/S0025654424600090
Subhadip Karmakar, Smita Pal Sarkar
{"title":"Instantaneous Heat Source Response in a Rotating Orthotropic Thermoelastic Medium Using Three-Phase-Lag Model","authors":"Subhadip Karmakar,&nbsp;Smita Pal Sarkar","doi":"10.1134/S0025654424600090","DOIUrl":"10.1134/S0025654424600090","url":null,"abstract":"<p>This article highlights the study of thermoelastic interaction in a homogeneous, orthotropic, rotating medium due to the influence of an instantaneous heat source. This study employs the three-phase-lag model. A differential equation in vector-matrix form has been formulated with the help of combined Laplace–Fourier transformation and the solution is obtained by using the eigenvalue approach. The Gaussian quadrature formula and the Bellman method are employed to numerically estimate the displacement components, temperature, and thermal stress components. Finally, the numerical outcomes are depicted graphically and compared with those of the Lord–Shulman and Green–Naghdi type III models.</p>","PeriodicalId":697,"journal":{"name":"Mechanics of Solids","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142565960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
On the Criterion for the Strength of Overlapped Plate Joints 论重叠板缝的强度标准
IF 0.6 4区 工程技术
Mechanics of Solids Pub Date : 2024-11-01 DOI: 10.1134/S0025654424602933
V. V. Glagolev, A. I. Lutkhov
{"title":"On the Criterion for the Strength of Overlapped Plate Joints","authors":"V. V. Glagolev,&nbsp;A. I. Lutkhov","doi":"10.1134/S0025654424602933","DOIUrl":"10.1134/S0025654424602933","url":null,"abstract":"<p>Based on experimental data on the destruction of the adhesive layer that interfaces two plates in a given area, and the well-known analytical solution corresponding to the design scheme, variants of the destruction criterion are considered, taking into account hydrostatic pressure and invariant components of elastic energy. One- and two-parameter criteria are studied, in which the products of the deformation energy of volume and shape and the layer thickness form the critical flow of elastic energy density. It is shown that the loosening of a thin adhesion layer with a two-parameter criterion quasi-linear with respect to the deformation energy of the volume most accurately describes the critical state.</p>","PeriodicalId":697,"journal":{"name":"Mechanics of Solids","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142565907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Nonlocal Couple Stress Vibration of Pasted Thermo Elastic Multilayered Cylinder with Hall Current and Multi Dual Phase Lags 带有霍尔电流和多双相滞后的粘贴热弹性多层圆柱体的非局部耦合应力振动
IF 0.6 4区 工程技术
Mechanics of Solids Pub Date : 2024-11-01 DOI: 10.1134/S0025654424603045
L. Anitha, R. Mehala Devi, R. Selvamani, F. Ebrahimi
{"title":"Nonlocal Couple Stress Vibration of Pasted Thermo Elastic Multilayered Cylinder with Hall Current and Multi Dual Phase Lags","authors":"L. Anitha,&nbsp;R. Mehala Devi,&nbsp;R. Selvamani,&nbsp;F. Ebrahimi","doi":"10.1134/S0025654424603045","DOIUrl":"10.1134/S0025654424603045","url":null,"abstract":"<p>This investigation aims to develop a thermoelasticity model to analyze the propagation of thermoelastic waves in a composite hollow circular cylinder with an LEMV/CFRP interface layer. The model integrates a modified non-local couple stress theory to address challenges related to higher-order time derivatives. The derivation yields three partial differential equations governing the modified non-local couple stress of the cylinder in axisymmetric mode. By applying linear elasticity theory, these equations are solved to derive frequency equations for the cylinder’s external surface under traction-free conditions while ensuring boundary continuity. The study investigates how variations in wave number and thickness affect the frequency, temperature, and displacements within the field. To evaluate the impact of different thermoelasticity theories and non-local coupled stress parameters, the research employs tables and graphs for comparison and estimation. These visual aids provide valuable insights into the behavior of the composite cylinder across various scenarios.</p>","PeriodicalId":697,"journal":{"name":"Mechanics of Solids","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142565884","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Elastic–Plastic Analysis of a Circular Pipe Turned Inside Out 内翻圆管的弹塑性分析
IF 0.6 4区 工程技术
Mechanics of Solids Pub Date : 2024-11-01 DOI: 10.1134/S0025654423602380
G. M. Sevastyanov
{"title":"Elastic–Plastic Analysis of a Circular Pipe Turned Inside Out","authors":"G. M. Sevastyanov","doi":"10.1134/S0025654423602380","DOIUrl":"10.1134/S0025654423602380","url":null,"abstract":"<p>The article presents an analytical solution for the problem of a circular pipe turning inside out in a rigid gasket. Formulas for the magnitude of the radial stress, which is responsible for the adhesion between the pipe and the gasket, have been obtained. The solution is obtained for an arbitrary incompressible hyperelastic material with a hyperelastic potential that depends only on the first invariant of the left Cauchy–Green deformation tensor (various generalizations of the neo-Hookean solid) or on the second invariant of the logarithmic Hencky strain tensor (various generalizations of the incompressible Hencky material). The solution considers the occurrence of plastic flow in areas adjacent to the lateral surfaces of the pipe. Both ideally plastic and isotropically hardening materials of a general type are considered. For the latter, a solution scheme is given; in the particular case of a linearly hardening material, a closed-form solution is obtained. For the perfect plasticity model, a closed-form solution was obtained for the neo-Hookean solid, for an incompressible Hencky material, and for the Gent material.</p>","PeriodicalId":697,"journal":{"name":"Mechanics of Solids","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142565905","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Research on Application of Backpropagation Neural Network in Damage Detection of the Refined Plate Model 反向传播神经网络在精制板模型损伤检测中的应用研究
IF 0.6 4区 工程技术
Mechanics of Solids Pub Date : 2024-11-01 DOI: 10.1134/S0025654424603392
Teng Wenxiang, Qian Cheng, Yan Leilei, Shen Gang, Liu Pengyu, He Jipeng, Wang Cheng
{"title":"Research on Application of Backpropagation Neural Network in Damage Detection of the Refined Plate Model","authors":"Teng Wenxiang,&nbsp;Qian Cheng,&nbsp;Yan Leilei,&nbsp;Shen Gang,&nbsp;Liu Pengyu,&nbsp;He Jipeng,&nbsp;Wang Cheng","doi":"10.1134/S0025654424603392","DOIUrl":"10.1134/S0025654424603392","url":null,"abstract":"<p>Artificial intelligence has been widely used in engineering. In this paper, we propose to combine the backpropagation neural network (BPNN) with the refined plate model based on Carrera Unified Formula (CUF) to advance the development of damage detection. The prediction model is built by utilizing the error back propagation function of the neural network. In addition, MATLAB uses Taylor’s interpolation algorithm and lower degrees of freedom yet achieves the same accuracy as ANSYS, and the improved plate model accurately reproduces the mechanical properties of the metal plate. A database is then built based on the mechanical model to detect the location of damaged elements and node displacements. The nodal displacements were used as inputs while the locations of damaged elements were used as training outputs for the neural network. The effectiveness of the proposed method was verified through various damage scenarios. The results show that the method can accurately predict individual damage locations based on node displacements alone. The neural network combined with the plate model achieved a detection accuracy of 91% with a regression coefficient of 0.95.</p>","PeriodicalId":697,"journal":{"name":"Mechanics of Solids","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142565961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Complementary Energy Theorem for Thin Composite Plates in Postbuckling 后屈曲薄复合板的互补能量定理
IF 0.6 4区 工程技术
Mechanics of Solids Pub Date : 2024-11-01 DOI: 10.1134/S0025654424602957
S. V. Selyugin
{"title":"Complementary Energy Theorem for Thin Composite Plates in Postbuckling","authors":"S. V. Selyugin","doi":"10.1134/S0025654424602957","DOIUrl":"10.1134/S0025654424602957","url":null,"abstract":"<p>The thin composite von Kármán plates in postbuckling are considered. Using the first Piola stress tensor and the displacement gradient tensor, the complementary energy variational theorem is proven. The Kirchhoff assumptions are adopted. The plate lay-up is symmetric and pointwise. According to the theorem, at the actual stress state of the plate the complementary energy (as a functional of the internal forces and of the moments) reaches its stationary value. The stationary feature of the actual state is valid as compared to other feasible states satisfying the static equilibrium and the static boundary conditions. The theorem is a consent of the static variational principle. The principle leads to the linear relations between forces/moments, created by the corresponding first Piola stress tensor components, and the 2D-strains/curvatures. An illustrative plate example is given.</p>","PeriodicalId":697,"journal":{"name":"Mechanics of Solids","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142565910","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Magneto-Thermoelastic Semiconductor Medium with Diffusion under the Hyperbolic Two-Temperature Photothermal Waves 双曲双温光热波下具有扩散性的磁致热弹性半导体介质
IF 0.6 4区 工程技术
Mechanics of Solids Pub Date : 2024-11-01 DOI: 10.1134/S0025654424603768
Doaa M. Salah, A. M. Abd-Alla, S. M. Abo-Dahab, Amnah M. Alharbi, M. A. Abdelhafez
{"title":"Magneto-Thermoelastic Semiconductor Medium with Diffusion under the Hyperbolic Two-Temperature Photothermal Waves","authors":"Doaa M. Salah,&nbsp;A. M. Abd-Alla,&nbsp;S. M. Abo-Dahab,&nbsp;Amnah M. Alharbi,&nbsp;M. A. Abdelhafez","doi":"10.1134/S0025654424603768","DOIUrl":"10.1134/S0025654424603768","url":null,"abstract":"<p>The purpose of this research is to examine the effects of magnetic field and thermal diffusion on a photo-thermoelastic semiconducting medium under the theory of hyperbolic two-temperature. During the formulation of the problem using the hyperbolic two-temperature theory, the relation between plasma and thermoelastic waves was explored. The medium is assumed to be a semiconducting medium with isotropic and homogeneous characteristics. The Laplace transform technique is used to construct analytic formulations for physical quantities such as stresses, displacement components, temperature field, and mass concentration. To show the results, numerical computations are done using the MATHEMATICA program for the selected material (Si). To demonstrate the significance and effectiveness of the obtained results, the full solutions of the major physical variables in the space-time domain are found using a numerical method based on the inverse of the Laplace transform. A comparison is carried out with and without a magnetic field, at different theories (CTE, LS, GL) and with another research that agree with the previous paper when the new parameters neglected.</p>","PeriodicalId":697,"journal":{"name":"Mechanics of Solids","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142565882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Factors of Stability of Wells in Reservoirs of Underground Gas Storage Facilities 地下储气设施储层中井的稳定性因素
IF 0.6 4区 工程技术
Mechanics of Solids Pub Date : 2024-11-01 DOI: 10.1134/S0025654424603239
V. I. Karev, Yu. F. Kovalenko, K. B. Ustinov
{"title":"Factors of Stability of Wells in Reservoirs of Underground Gas Storage Facilities","authors":"V. I. Karev,&nbsp;Yu. F. Kovalenko,&nbsp;K. B. Ustinov","doi":"10.1134/S0025654424603239","DOIUrl":"10.1134/S0025654424603239","url":null,"abstract":"<p>Preserving the integrity of wells and preventing sand production processes are among the key problems in the operation of underground gas storage facilities. Previously, the authors have stated that a key role in the processes of destruction and sand production is played by changes in formation pressure in the reservoir as a whole, since it has a decisive influence on the magnitude of the stresses acting in the vicinity of the wells. This thesis differs from the point of view of many researchers who associate these negative processes with a change in the stress state in the bottomhole zone of the formation caused by drawdown/overbalance in wells. The main goal of the article is to study the influence of unequal components of the initial stress state, as well as elastic and strength anisotropy of reservoir rocks on the stability of wells. It is shown that the presence of unequal components of the initial stress state and elastic anisotropy can lead to stress concentrations on the well contour that differ significantly from the isotropic case. It is also shown that in the presence of strength anisotropy, a change in the location of the points of the beginning of well destruction can be observed. The calculations performed have been confirmed by experimental studies carried out on rocks of the Uvyazovsky underground gas storage facility under conditions of true triaxial independent loading.</p>","PeriodicalId":697,"journal":{"name":"Mechanics of Solids","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142565914","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Expansion of a Spherical Cavity in an Infinite Dilatant Medium Obeying the Drucker–Prager Yield Criterion and a Non-Associated Plastic Flow Rule 遵守德鲁克-普拉格屈服准则和非相关塑性流动规则的球形空腔在无限稀释介质中的膨胀
IF 0.6 4区 工程技术
Mechanics of Solids Pub Date : 2024-11-01 DOI: 10.1134/S0025654424604014
E. A. Lyamina
{"title":"Expansion of a Spherical Cavity in an Infinite Dilatant Medium Obeying the Drucker–Prager Yield Criterion and a Non-Associated Plastic Flow Rule","authors":"E. A. Lyamina","doi":"10.1134/S0025654424604014","DOIUrl":"10.1134/S0025654424604014","url":null,"abstract":"<p>The distributions of the principal stresses, the radial velocity, and the relative density are determined in an infinite dilatant medium in which a spherical cavity expands from a zero radius. The medium obeys the Drucker–Prager yield criterion. The plastic potential is also of Drucker–Prager type but differs from the yield criterion. Moreover, it involves the relative density and results in the incompressibility equation at a certain relative density value. A detailed analysis of the solution is provided for a specific dependence of the plastic potential on the relative density. It is shown that the qualitative behavior of the solution near the cavity’s surface depends on a constitutive parameter involved in this dependence. A numerical example illustrates the general solution.</p>","PeriodicalId":697,"journal":{"name":"Mechanics of Solids","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142565861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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