Mechanics of Solids最新文献_第9页

Reflection and Transmission of SH Waves in a Piezomagnetic Right-Angle Plane Featuring a Circular Cavity and Irregular Boundaries: a Boundary Element Method Analysis 圆腔不规则边界压磁直角平面中SH波的反射和透射：边界元法分析

IF 0.9 4区工程技术

Mechanics of Solids Pub Date : 2025-07-31 DOI: 10.1134/S0025654424607146

Xi-meng Zhang, Hui Qi, Jun-hua Chen, Shu-qin Zhang, Ying Liu

{"title":"Reflection and Transmission of SH Waves in a Piezomagnetic Right-Angle Plane Featuring a Circular Cavity and Irregular Boundaries: a Boundary Element Method Analysis","authors":"Xi-meng Zhang, Hui Qi, Jun-hua Chen, Shu-qin Zhang, Ying Liu","doi":"10.1134/S0025654424607146","DOIUrl":"10.1134/S0025654424607146","url":null,"abstract":"In this study, we analyze a piezomagnetic right-angle plane featuring a circular cavity and irregular boundaries utilizing the boundary element method. External loads in the form of SH waves and line sources acting on the piezomagnetic right-angle plane are taken into account. The efficacy of the boundary element method is demonstrated through two distinct illustrative scenarios. First, we assess the dynamic characteristics in the absence of line source loads on the irregular boundary, employing the image method and Graf addition theorem in the first scenario. Subsequently, we introduce Green’s identities and solve for the Green’s function in infinite three-dimensional space. In the second scenario, we explore the dynamic characteristics when irregular boundaries are subjected to line source loads using the boundary element method. Our findings elucidate the impact on the dynamic stress concentration factor and magnetic field intensity concentration factor under suitable conditions. Additionally, we compare analytical solutions with finite element solutions to corroborate the accuracy of the conclusions presented in this study.","PeriodicalId":697,"journal":{"name":"Mechanics of Solids","volume":"60 3","pages":"1915 - 1942"},"PeriodicalIF":0.9,"publicationDate":"2025-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145028379","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}

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The Effect of Viscosity on Energy Ratios in Elastic Materials with Piezoelectric Properties, Considering Two Temperature Levels and a Three-Phase Lag 考虑两个温度水平和三相滞后的压电弹性材料中粘度对能量比的影响

IF 0.9 4区工程技术

Mechanics of Solids Pub Date : 2025-07-31 DOI: 10.1134/S0025654425600631

R. Kumar, M. Marin, S. Vlase

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Combined Inter-Particle and Wall-Particle Friction Coefficient Effects on Collapse Mobility and Deposition Morphology of a Granular Column Composed of Pentagonal Grains 颗粒间和颗粒壁复合摩擦系数对五边形颗粒柱崩塌迁移率和沉积形貌的影响

IF 0.9 4区工程技术

Mechanics of Solids Pub Date : 2025-07-31 DOI: 10.1134/S0025654425600618

Thanh-Hai Nguyen, Thanh-Vu Ngo, Thanh-Trung Vo

{"title":"Combined Inter-Particle and Wall-Particle Friction Coefficient Effects on Collapse Mobility and Deposition Morphology of a Granular Column Composed of Pentagonal Grains","authors":"Thanh-Hai Nguyen, Thanh-Vu Ngo, Thanh-Trung Vo","doi":"10.1134/S0025654425600618","DOIUrl":"10.1134/S0025654425600618","url":null,"abstract":"Frictional gravity-driven granular flows are ubiquitous scenarios in natural hazardous events such as landslides, rock avalanches, and snow avalanches. Understanding the physical behavior of the natural hazards above may play an important role in mitigating and controlling their potential impacts. The boundary-particle and inter-particle friction coefficient may strongly govern the mobility and runout distance of such flows. In this paper, we numerically explore these frictional effects on the kinetic energy and deposition morphology of a pentagonal granular column collapses on a horizontal plane utilizing discrete element simulations. The results showed that small values of both wall-particle and inter-particle friction coefficients significantly affect the mobility and deposition of granular materials. In contrast, these physical behaviors are nearly insensitive with large values of both friction coefficients. Interestingly, by proposing a dimensionless parameter under inversely linear combining the wall-particle friction and inter-particle friction coefficient, both kinetic energy and deposition morphology are nontrivially controlled but with different values of the weighting factor of the inter-particle friction coefficient. This interesting finding confirms the different contributions of wall-particle and inter-particle friction coefficients and may originate from the contact forces network, characterized by the probability density functions of normal contact forces in the collapsing and spreading stages. These observations may significantly provide a better understanding of the behavior of frictional hazardous flows, leading to the development of effective strategies for risk reduction.","PeriodicalId":697,"journal":{"name":"Mechanics of Solids","volume":"60 3","pages":"2018 - 2032"},"PeriodicalIF":0.9,"publicationDate":"2025-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145028378","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

Dynamic Response of Lining Tunnel in Unsaturated Orthotropic Soil under Endogenous Blast Loading 内源爆炸荷载作用下非饱和正交各向异性土衬砌隧道动力响应

IF 0.9 4区工程技术

Mechanics of Solids Pub Date : 2025-07-31 DOI: 10.1134/S002565442560093X

Ying Wang, Jiayi Liu, Meng Gao, Caiqing Zhao

{"title":"Dynamic Response of Lining Tunnel in Unsaturated Orthotropic Soil under Endogenous Blast Loading","authors":"Ying Wang, Jiayi Liu, Meng Gao, Caiqing Zhao","doi":"10.1134/S002565442560093X","DOIUrl":"10.1134/S002565442560093X","url":null,"abstract":"In this study, a computational model is developed to investigate tunneling in unsaturated orthotropic anisotropic media subjected to endogenous blast loading. The tunnel lining is modeled as a uniform elastic medium and the soil around the lining is regarded as an unsaturated orthotropic medium, taking into account the contact between the soil and the lining. Using Biot’s theory, the governing equations for the tunnel and the unsaturated orthotropic soil in the Cartesian coordinate system are derived via Laplace and Fourier transform methods. The integral dynamic response solution is then obtained by applying inverse transforms. Furthermore, this study examines the effects of saturation and soil properties on the transient dynamic response characteristics of the tunnel lining and surrounding soil under endogenous blast loading, in comparison to isotropic media. The results demonstrate that the proposed solution effectively describes the dynamic response of the lining and unsaturated orthotropic soil under blast loading conditions. The results show that under the effect of endogenous blast loading, the lining and the surrounding soil show a tendency to attenuate oscillations with time and eventually reach the dynamic equilibrium state. Through the comparative study of the isotropic soil, the findings indicate that different characteristics of soil have a significant impact on its dynamic response. However, the change of the saturation of the medium parameters has little effect on the dynamic response of the tunnel lining and unsaturated orthotropic soil under blast loading.","PeriodicalId":697,"journal":{"name":"Mechanics of Solids","volume":"60 3","pages":"2070 - 2084"},"PeriodicalIF":0.9,"publicationDate":"2025-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145028432","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

Modeling and Analysis of Robotic System Made of Composite Material 复合材料机器人系统建模与分析

IF 0.9 4区工程技术

Mechanics of Solids Pub Date : 2025-07-31 DOI: 10.1134/S0025654425601855

K. Z. Khairnasov

{"title":"Modeling and Analysis of Robotic System Made of Composite Material","authors":"K. Z. Khairnasov","doi":"10.1134/S0025654425601855","DOIUrl":"10.1134/S0025654425601855","url":null,"abstract":"The article discusses the development of a multi-degree model of a stand of a semi-natural modeling stand under dynamic loading. The presents a technique for obtaining a three-layer model of the stand, consisting of external load-bearing layers made of a five-layer composite material and a filler layer between them, made of a foam-type material. The approximation of the stand by finite elements was carried out with the change of elements that are inadequate implemented in the finite element method: bearings, gear rims, reducers, by systems of rods identical to them by of rigidity. The convergence of the calculation results was checked by thickening the finite element mesh. The stress-strain state of the stand under dynamic loading was obtained and the natural frequencies of oscillations were determined. The strength characteristics of the stand are determined depending on the location of the fibers in the layer in a five-layer composite material. Theories of destruction are used to calculate the strength characteristics of a five-layer composite material. The methods developed in the work are applicable to a wide class of robotic systems that are widely used in various fields of science and technology.","PeriodicalId":697,"journal":{"name":"Mechanics of Solids","volume":"60 3","pages":"2112 - 2118"},"PeriodicalIF":0.9,"publicationDate":"2025-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145028381","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

Doublet Structural Dynamics of Porous Euler Mass Sensor Nanobeam with Klein–Gordon Nonlocality 具有Klein-Gordon非定域的多孔欧拉质量传感器纳米梁的双重态结构动力学

IF 0.9 4区工程技术

Mechanics of Solids Pub Date : 2025-07-31 DOI: 10.1134/S0025654425600722

R. Selvamani, T. Prabhakaran, Farzad Ebrahimi

{"title":"Doublet Structural Dynamics of Porous Euler Mass Sensor Nanobeam with Klein–Gordon Nonlocality","authors":"R. Selvamani, T. Prabhakaran, Farzad Ebrahimi","doi":"10.1134/S0025654425600722","DOIUrl":"10.1134/S0025654425600722","url":null,"abstract":"This study investigates the doublet structural model for analyzing porous Euler mass sensor nanobeams, incorporating the concept of doublet mechanics alongside Bernstein polynomials with Klein–Gordon nonlocality. Bernstein polynomials serves as basis functions within the Rayleigh–Ritz method, facilitating conversional governing equations into a generalized eigenvalue problem. The study further employs orthogonal Bernstein polynomials for enhanced computational precision. By incorporating a mass sensor mechanism, the model leverages nanobeam sensitivity to detect small mass variations for nanoscale applications. Additionally, the research examines variable material properties and a range of boundary conditions, with significant emphasis on the effects of frequency parameter, normal stress, displacement, scaling effect parameter, beam length, doublet mechanics parameter, nonlocal parameter and resonant frequency. To validate the results, a comparative analysis is conducted, and the outcomes are tabulated to confirm the effectiveness of the approach. This study’s results may be useful for the optimal and safety design of nano-electro-mechanics systems.","PeriodicalId":697,"journal":{"name":"Mechanics of Solids","volume":"60 3","pages":"2048 - 2069"},"PeriodicalIF":0.9,"publicationDate":"2025-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145028384","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

A Dual-Phase-Lag Model of an Infinite Plate of a Thermoelastic Medium with Double-Porosity and Fractional Time Derivative 双孔隙分数时间导数热弹性介质无限板的双相位滞后模型

IF 0.9 4区工程技术

Mechanics of Solids Pub Date : 2025-07-31 DOI: 10.1134/S0025654425600576

Aseem Miglani, Rajneesh Kumar, Amarjyot Kaur, Monika Kalra

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Axisymmetric Deformation Field of an Elastic Half-Space Induced by a Steady-State Point Source of Heat 稳态点热源引起的弹性半空间轴对称变形场

IF 0.9 4区工程技术

Mechanics of Solids Pub Date : 2025-07-31 DOI: 10.1134/S0025654424606554

Renu Muwal, Kuldip Singh

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Determination of Limit Loads for Transverse Bending of Multilayered Physically Nonlinear Concrete Rods 多层物理非线性混凝土杆横向弯曲极限荷载的确定

IF 0.9 4区工程技术

Mechanics of Solids Pub Date : 2025-07-31 DOI: 10.1134/S0025654425601740

Yu. V. Nemirovskii, S. V. Tikhonov

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Dynamic Analysis for V-Notch at the Bi-Material Half Space Covered by the Viscous Fluid Coating: Fluid-Solid Coupling Model 粘性流体涂层覆盖双材料半空间v型缺口的动力学分析：流固耦合模型

IF 0.9 4区工程技术

Mechanics of Solids Pub Date : 2025-07-31 DOI: 10.1134/S0025654425600539

Xi-meng Zhang, Mo-fan Wang, Jia-yi Li

{"title":"Dynamic Analysis for V-Notch at the Bi-Material Half Space Covered by the Viscous Fluid Coating: Fluid-Solid Coupling Model","authors":"Xi-meng Zhang, Mo-fan Wang, Jia-yi Li","doi":"10.1134/S0025654425600539","DOIUrl":"10.1134/S0025654425600539","url":null,"abstract":"In this paper, the dynamic problem of a V-notch at the bi-material half space covered by the viscous fluid coating is studied. Firstly, the expression for the incident SH wave in the viscous fluid coating is obtained by Navier-Stokes equations. Then, the analytical expression of standing wave is established by the fractional Bessel function expansion method and Graf addition theorem. Large-arc assume method is applied, the elastic half space base and viscous fluid coating are divided into two strips along the horizontal interface, the straight boundaries are converted into curved boundaries, and the expressions of scattering waves caused by curved boundaries are obtained. Finally, based on the Green’s function method, an external force system is applied to the vertical boundary and solved. The integral equations are set up through boundary conditions and solved by applying orthogonal function expansion technique and effective truncation. The calculation results analyzed and discussed the dynamic stress concentration factor of V-notch at the bi-material. Besides, the analytical solutions are compared with the finite element solutions to verify the accuracy of the conclusions in this article.","PeriodicalId":697,"journal":{"name":"Mechanics of Solids","volume":"60 3","pages":"1977 - 1999"},"PeriodicalIF":0.9,"publicationDate":"2025-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145028380","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