Mechanics of Solids最新文献_第9页

Nonlocal Bi-Fractional DPL Multi-Temperature Photo-Thermoelastic Waves in Semiconductors with Variable Thermal Conductivity under Ramp-Type Loading 斜坡型负载下变导热半导体的非局部双分数DPL多温度光热弹性波

IF 1 4区工程技术

Mechanics of Solids Pub Date : 2026-08-29 DOI: 10.1134/S0025654425606433

Amal Al-Hanaya, Wedad Albalawi, Shreen El-Sapa, Khaled Lotfy, Alaa A. El-Bary

{"title":"Nonlocal Bi-Fractional DPL Multi-Temperature Photo-Thermoelastic Waves in Semiconductors with Variable Thermal Conductivity under Ramp-Type Loading","authors":"Amal Al-Hanaya, Wedad Albalawi, Shreen El-Sapa, Khaled Lotfy, Alaa A. El-Bary","doi":"10.1134/S0025654425606433","DOIUrl":"10.1134/S0025654425606433","url":null,"abstract":"This study presents a generalized theoretical framework for analyzing wave propagation in a semiconductor medium within the context of nonlocal photo-thermoelasticity. The model incorporates bi-fractional dual-phase-lag (DPL) heat conduction, a multi-temperature formulation distinguishing between thermodynamic and conductive temperatures, and temperature-dependent thermal conductivity under ramp-type thermal loading. Nonlocal elasticity is introduced to account for size-dependent mechanical behavior, which becomes significant in micro- and nanoscale semiconductor structures. The governing equations, describing the coupled interactions among displacement, temperature fields, and carrier concentration, are formulated in a two-dimensional setting and reduced using the normal mode method to obtain a characteristic equation governing wave propagation. The influence of the nonlocal parameter, fractional orders, and phase-lag times on the attenuation and dispersion characteristics of thermoelastic waves is examined. The results reveal that nonlocality significantly smooths stress distributions and reduces wave amplitudes, while the bi-fractional DPL model introduces pronounced memory effects that delay thermal responses and modify phase behavior. Furthermore, ramp-type thermal loading leads to more gradual stress development compared with instantaneous heating. The proposed model provides a comprehensive framework for understanding coupled wave phenomena in semiconductor media and offers new insights into the role of size effects and thermal memory in advanced solid-state systems.","PeriodicalId":697,"journal":{"name":"Mechanics of Solids","volume":"61 3","pages":""},"PeriodicalIF":1.0,"publicationDate":"2026-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148856606","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

An Anisotropic Hypoplastic Interface Model Considering Plane Strain Condition and Surface Roughness, and its Application in Predicting the Axial Capacity of Pile Foundation 考虑平面应变条件和表面粗糙度的各向异性欠塑性界面模型及其在桩基轴向承载力预测中的应用

IF 1 4区工程技术

Mechanics of Solids Pub Date : 2026-08-29 DOI: 10.1134/S0025654425605890

Yong-Gwang Jong, Kang-Guk Kim, Un-Aha Kim

引用次数: 0

Analytical and Machine Learning Approach for Prediction and Optimization of Fundamental Frequencies of Functionally Graded Material – Porous Sandwich Plates 功能梯度材料基频预测与优化的分析与机器学习方法-多孔夹层板

IF 1 4区工程技术

Mechanics of Solids Pub Date : 2026-08-29 DOI: 10.1134/S0025654426602028

Huan Thanh Duong, Quan Vu Le, Binh Cong Dao, Tien-Thinh Le

{"title":"Analytical and Machine Learning Approach for Prediction and Optimization of Fundamental Frequencies of Functionally Graded Material – Porous Sandwich Plates","authors":"Huan Thanh Duong, Quan Vu Le, Binh Cong Dao, Tien-Thinh Le","doi":"10.1134/S0025654426602028","DOIUrl":"10.1134/S0025654426602028","url":null,"abstract":"This research presents an alytical and machine learning approach for the prediction and optimization of fundamental frequencies in functionally graded material (FGM) – porous – FGM sandwich plates resting on a Pasternak elastic foundation. The analytical model is developed based on the First-Order Shear Deformation Theory (FSDT) to derive the governing equations of motion, which are solved using the Navier solution method. The influence of FGM volume fraction, porosity, aspect ratio, side-to-thickness ratio, and foundation parameters on the fundamental frequencies is systematically investigated. To enhance computational efficiency and improve predictive capabilities, different machine learning models are trained to predict the frequency over a wide range of input parameters. It is shown that the Artificial Neural Network model can predict the dimensionless fundamental frequency with a very strong effectiveness (R2 = 1.0000, RMSE = 2.2034 and MAE = 1.0309 using testing dataset). Furthermore, optimization studies are also performed to determine the optimal input parameters corresponding to a desired value of frequency. Pros and cons of analytical and machine learning models are also revealed during the optimization process, for instance in order to carry out just 1 iteration optimization, the analytical model needs on average 1958s while the Artificial Neural Network model needs on average only 0.1039 s.","PeriodicalId":697,"journal":{"name":"Mechanics of Solids","volume":"61 3","pages":""},"PeriodicalIF":1.0,"publicationDate":"2026-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148856689","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

Prediction Model for Bulk and Interfacial Stress Redistribution During Phase Transition of Sheath Structure 鞘层结构相变过程中体应力和界面应力重分布预测模型

IF 1 4区工程技术

Mechanics of Solids Pub Date : 2026-08-29 DOI: 10.1134/S0025654426601382

Xudong Zhang, Xiuxing Zhu, Jiahao Li, Bo Zhou, Peng Jia

{"title":"Prediction Model for Bulk and Interfacial Stress Redistribution During Phase Transition of Sheath Structure","authors":"Xudong Zhang, Xiuxing Zhu, Jiahao Li, Bo Zhou, Peng Jia","doi":"10.1134/S0025654426601382","DOIUrl":"10.1134/S0025654426601382","url":null,"abstract":"This study develops a hydro-mechanical (HM) multi-field coupled model to track stress evolution in reactive materials like cementitious composites. These materials exhibit highly non-steady-state bulk and interfacial stresses during the transition from liquid to porous solid. Unlike conventional structural analyses, our model accounts for phase transition processes and dynamic boundary conditions. It specifically highlights how material strength development drives load transfer and how endogenous volumetric strain redistributes system stress. By incorporating nonlinear constitutive parameters correlated with the degree of reaction, the model achieves a precise description of the spatiotemporal mechanical response of the sheath system under annular confinement. Validation results demonstrate that the calculated values are in high agreement with experimental pressure evolution trends. The findings reveal that internal volumetric shrinkage is the core driver for the reduction of radial compressive stress and the generation of circumferential tensile stress. Furthermore, the interplay between initial hydrostatic pressure and the evolution of skeletal stiffness dictates the medium-to-long-term evolution path of interfacial stress. This research elucidates the mechanical pathways of stress redistribution in reactive materials during constrained phase transitions, providing a theoretical framework for the structural integrity assessment of heterogeneously evolving materials under complex constraints.","PeriodicalId":697,"journal":{"name":"Mechanics of Solids","volume":"61 3","pages":""},"PeriodicalIF":1.0,"publicationDate":"2026-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148856614","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 Applied Theory of Stretching and Bending of a Rectangle and Its Applications to Coefficient Inverse Problems 矩形拉伸和弯曲的应用理论及其在系数反问题中的应用

IF 1 4区工程技术

Mechanics of Solids Pub Date : 2026-08-12 DOI: 10.1134/S0025654425606342

A. O. Vatulyan, V. O. Yurov

引用次数: 0

Evolution of the Rotational Movement of a Three-Axis Satellite with Ball Damper in Circular Orbit 带球阻尼器的三轴卫星在圆轨道上旋转运动的演化

IF 1 4区工程技术

Mechanics of Solids Pub Date : 2026-08-12 DOI: 10.1134/S0025654425605853

N. I. Amel’kin

引用次数: 0

Development of Sampling Surfaces Method for Solving Three-Dimensional Problems of Mechanics of Shells 求解壳体三维力学问题的采样面法的发展