Acta Mechanica最新文献_第8页

Advanced buckling analysis of graphene-enhanced honeycomb sandwich annular plates in hygrothermal environment considering foundation interaction with frictional effects: a high-order numerical study for enhanced stability 考虑地基相互作用和摩擦效应的石墨烯增强蜂窝夹层环板在湿热环境中的高级屈曲分析：增强稳定性的高阶数值研究

IF 2.9 3区工程技术

Acta Mechanica Pub Date : 2025-09-26 DOI: 10.1007/s00707-025-04522-3

Hao Zhang, Mohsen Alizadeh, Behzad Royaei

{"title":"Advanced buckling analysis of graphene-enhanced honeycomb sandwich annular plates in hygrothermal environment considering foundation interaction with frictional effects: a high-order numerical study for enhanced stability","authors":"Hao Zhang, Mohsen Alizadeh, Behzad Royaei","doi":"10.1007/s00707-025-04522-3","DOIUrl":"10.1007/s00707-025-04522-3","url":null,"abstract":"<div><p>The buckling behavior of sandwich annular plates comprising a honeycomb core and graphene platelet-reinforced top and bottom layers is studied in this paper using the high-order deformation theory. The structure is in hygrothermal environment with assuming the foundation with spring and shear layer assuming frictional effects. This modeling framework also captures a wider range of deformation behavior that is often missed by lower-order models. Considering this complicated problem, the numerical highly accurate technique of diffrential quadrature method (DQM) is used which efficiently manages the complicated boundary conditions. Finally, extensive numerical simulations are performed in order to analyze the buckling response in depth, focusing on major design parameters like the annular plates inner radius, temperature, moisture, foundation, boundary conditions, friction coefficient and GPL’s volume fraction in the nanocomposite layers. The results highlight the sensitivity of buckling behavior to these changes in design and provide greater insight into the mechanics that controls composite sandwich structures under compressive loads. A larger volume fraction of GPL will increase the buckling load. Increasing temperature from 30 to 45 °C decreases the buckling load by about 14%. and moisture content up to 40% lowers the buckling load by approximately 23%. In addition, changing boundary conditions from C–F to C–C raises the buckling load by up to 70%.</p></div>","PeriodicalId":456,"journal":{"name":"Acta Mechanica","volume":"237 1","pages":"17 - 36"},"PeriodicalIF":2.9,"publicationDate":"2025-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145915749","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Vibration of piezoelectric nanobeams with flexoelectric effect carrying an attached mass 具有挠性电效应的压电纳米梁的振动

IF 2.9 3区工程技术

Acta Mechanica Pub Date : 2025-09-26 DOI: 10.1007/s00707-025-04523-2

Jian Zhang, Ying Yang

引用次数: 0

Vibration analysis of a hexachiral core and composite sandwich nanoplate resting on Pasternak foundation under magnetic thermal conditions 磁热条件下帕斯捷尔纳克地基上六手核复合夹层纳米板的振动分析

IF 2.9 3区工程技术

Acta Mechanica Pub Date : 2025-09-25 DOI: 10.1007/s00707-025-04516-1

Adem Fatih Ozalp, Ismail Esen

{"title":"Vibration analysis of a hexachiral core and composite sandwich nanoplate resting on Pasternak foundation under magnetic thermal conditions","authors":"Adem Fatih Ozalp, Ismail Esen","doi":"10.1007/s00707-025-04516-1","DOIUrl":"10.1007/s00707-025-04516-1","url":null,"abstract":"<div><p>A thermo-magneto-vibrational model is developed for sandwich nanoplates composed of composite metallic–ceramic face sheets and a hexachiral auxetic core. The formulation integrates higher-order shear deformation theory with nonlocal strain gradient theory to incorporate shear–flexural coupling and nanoscale size effects. Present research simultaneously addresses the influence of hexachiral geometry, elastic foundation parameters, magnetic field, and face-sheet composition within a unified framework. The governing equations are derived using Hamilton’s principle and solved through the Navier approach under simply supported boundary conditions. A systematic parametric study is carried out to assess the role of geometric ratios, material gradation, and scale-dependent parameters on vibration and thermal stability. Combining composite layers and core hexachiral auxetic lattice structure with multiphysics fields and nanoscale elasticity, offering a generalized formulation that captures interactions not previously considered together. The outcomes provide a basis for the design of thermally and magnetically durable sandwich nanoplates in aerospace, automotive, acoustic, and protective structural applications.</p></div>","PeriodicalId":456,"journal":{"name":"Acta Mechanica","volume":"236 12","pages":"7363 - 7384"},"PeriodicalIF":2.9,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145595261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 innovative hyperelastoplasticity algorithm utilizing intermediate configurations and the subloading surface model for excessive deformations with nonlinear combined hardening 一种基于中间构形和次加载面模型的超弹塑性非线性复合硬化超变形算法

IF 2.9 3区工程技术

Acta Mechanica Pub Date : 2025-09-24 DOI: 10.1007/s00707-025-04501-8

Reza Toluei, Mahsa Kharazi

{"title":"An innovative hyperelastoplasticity algorithm utilizing intermediate configurations and the subloading surface model for excessive deformations with nonlinear combined hardening","authors":"Reza Toluei, Mahsa Kharazi","doi":"10.1007/s00707-025-04501-8","DOIUrl":"10.1007/s00707-025-04501-8","url":null,"abstract":"<div><p>Unconventional elastoplasticity models, whether in small strain or finite strain regimes, have been developed to accurately depict material responses under diverse loading conditions. Due to the unrealistic and unphysical predictions of certain existing models in such scenarios, the proposing and refining of time integration schemes becomes imperative. This paper introduces a novel numerical implementation for the subloading surface model, an unconventional approach, within the framework of finite strain elastoplasticity. The proposed method is based on intermediate configurations in hyperelastoplasticity, utilizing dual multiplicative decompositions. Additionally, detailed calculations of partial derivatives, which are essential for the time integration scheme, are provided. Compared to recently published papers, the proposed time integration scheme is simpler in terms of the number of equations, unknown variables, and partial derivatives. The implementation is demonstrated through the solution of simple shear and tension/compression deformations, incorporating kinematic and combined hardenings for various materials including metals and polymers. Results are compared with available data from literature and experimental findings. The presented examples demonstrate a good agreement between the results under different conditions.</p></div>","PeriodicalId":456,"journal":{"name":"Acta Mechanica","volume":"236 12","pages":"7341 - 7361"},"PeriodicalIF":2.9,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145595259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Photo-thermoelastic wave dynamics in a microelongated hydrodynamic semiconductor medium under laser pulses 激光脉冲作用下微拉长流体动力半导体介质的光热弹性波动动力学

IF 2.9 3区工程技术

Acta Mechanica Pub Date : 2025-09-24 DOI: 10.1007/s00707-025-04518-z

Hala H. Taha, M. Adel, Eman Ibrahim, Alaa A. El-Bary, Engin Can, Khaled Lotfy

{"title":"Photo-thermoelastic wave dynamics in a microelongated hydrodynamic semiconductor medium under laser pulses","authors":"Hala H. Taha, M. Adel, Eman Ibrahim, Alaa A. El-Bary, Engin Can, Khaled Lotfy","doi":"10.1007/s00707-025-04518-z","DOIUrl":"10.1007/s00707-025-04518-z","url":null,"abstract":"<div><p>This paper presents a novel model for analyzing the behavior of a generalized photo-microelongated thermoelastic semiconductor system that incorporates hydrodynamic and poroelastic effects. Motivated by the need to understand semiconductor dynamics under coupled mechanical, thermal, and photonic stimuli for advanced technological applications, the study develops a one-dimensional (1D) framework using Laplace transformation to derive analytical solutions. Numerical computations and graphical representations illustrate the evolution of critical physical quantities such as carrier density, temperature distribution, displacement, pore water pressure, and stress functions, emphasizing the influence of time progression, relaxation parameters, and microelongation effects. The results highlight the unique contributions of hydrodynamic and poroelastic interactions, providing insights into semiconductor behavior at microscales. This comprehensive analysis advances the understanding of semiconductor materials, offering potential applications in photonic devices, energy systems, and thermal management technologies while providing a theoretical framework to predict material behavior under diverse external stimuli, minimizing the need for costly experiments.</p></div>","PeriodicalId":456,"journal":{"name":"Acta Mechanica","volume":"237 1","pages":"1 - 15"},"PeriodicalIF":2.9,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00707-025-04518-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145915746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dynamic response and energy harvesting optimization of four-layered beams with piezoelectric patch under multiple moving loads 多重移动荷载作用下压电贴片四层梁的动力响应及能量收集优化

IF 2.9 3区工程技术

Acta Mechanica Pub Date : 2025-09-23 DOI: 10.1007/s00707-025-04530-3

Yihao Zou, Xueqian Fang, Jiayan Tian, Pu He

{"title":"Dynamic response and energy harvesting optimization of four-layered beams with piezoelectric patch under multiple moving loads","authors":"Yihao Zou, Xueqian Fang, Jiayan Tian, Pu He","doi":"10.1007/s00707-025-04530-3","DOIUrl":"10.1007/s00707-025-04530-3","url":null,"abstract":"<div><p>Piezoelectric materials have been extensively used as energy collector due to their excellent character of environmental vibration energy conversion. However, the existing piezoelectric energy collector model is not suitable for complex multi-layered beam structures. The objective of this paper is to explore the dynamic response and piezoelectric patch energy harvesting of four-layered beams with single unimorph piezoelectric patch subjected to multiple moving loads, and the governing equations are derived by using Hamilton’s principle. The effects of structural lamina parameters and piezoelectric patch parameters of four-layered beams with single piezoelectric patch on dynamic response and optimal energy harvesting are investigated. A detailed parametric analysis of the structural lamina and piezoelectric patch of the four-layered beam model is conducted, and the optimality of energy harvesting parameters of the layered beam is discussed. It is found that the dynamic central deflection of layered beam and output voltage are quite related to the geometrical and physical parameters of each functional layer including the fiber orientation angles. The dynamic central deflection of layered beam is not sensitive to the piezoelectric patch, and so it is suitable of introducing the piezoelectric patch to produce the electric power. The optimum energy harvesting efficiency of the layered beam is also discussed in detail.</p></div>","PeriodicalId":456,"journal":{"name":"Acta Mechanica","volume":"236 12","pages":"7323 - 7339"},"PeriodicalIF":2.9,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145595178","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Effects of cracks characteristics on free vibrations of functionally graded plates and shells 裂纹特性对功能梯度板壳自由振动的影响

IF 2.9 3区工程技术

Acta Mechanica Pub Date : 2025-09-23 DOI: 10.1007/s00707-025-04510-7

Aymen Hadrich, Souhir Zghal, Sana Koubaa, Zoubeir Bouaziz

{"title":"Effects of cracks characteristics on free vibrations of functionally graded plates and shells","authors":"Aymen Hadrich, Souhir Zghal, Sana Koubaa, Zoubeir Bouaziz","doi":"10.1007/s00707-025-04510-7","DOIUrl":"10.1007/s00707-025-04510-7","url":null,"abstract":"<div><p>This paper intends to explore the effects of cracks characteristics on free vibration behavior of functionally graded plates and shells by means of Lagrangian formulation in conjunction with the variational principle on the basis of three-dimensional theory of elasticity. The discretization of the equation of motion is achieved by using a four-noded 3D tetrahedral finite element taking into account the normal component of the displacement field in the thickness direction. The material properties of the plates and shells are assumed to vary continuously and smoothly in the thickness direction according to a general four-parameter power-law distributions in terms of volume fractions of the constituents. The consistency and reliability of the present formulation is demonstrated through several numerical tests, by comparing the obtained natural frequencies with the existing results from the literature. Three numerical examples, including the vibrational response of functionally graded rectangular and annular plates, as well as, cylindrical shells under different crack positions, orientations and lengths are studied and presented. Parametric studies on crack characteristics, geometric and material parameters are explored in deep. It was demonstrated that the crack orientation, length and positions, additionally to material characteristics of FGM structures have a significant impact on vibrational behavior of cracked FGM plates and shells, which must be considered in the structural design and performance of functionally graded plates and shells.</p></div>","PeriodicalId":456,"journal":{"name":"Acta Mechanica","volume":"236 12","pages":"7277 - 7321"},"PeriodicalIF":2.9,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145595262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Wave propagation through a saturated frozen soil layer sandwiched by two elastic soil half-spaces 波在被两个弹性土半空间夹住的饱和冻土层中的传播

IF 2.9 3区工程技术

Acta Mechanica Pub Date : 2025-09-23 DOI: 10.1007/s00707-025-04506-3

Fengyu Jiao, Hengyu Ren, Zhongxian Liu, Shuo Zhu

{"title":"Wave propagation through a saturated frozen soil layer sandwiched by two elastic soil half-spaces","authors":"Fengyu Jiao, Hengyu Ren, Zhongxian Liu, Shuo Zhu","doi":"10.1007/s00707-025-04506-3","DOIUrl":"10.1007/s00707-025-04506-3","url":null,"abstract":"<div><p>Wave propagation through a saturated frozen soil layer sandwiched by two elastic soil half-spaces is investigated in this paper. The saturated frozen soil layer in the middle consists of a saturated three-phase medium of solid, liquid and ice, which is considered isotropic. Due to the presence of the three-phase medium, three types of longitudinal waves and two types of shear waves exist in saturated frozen soil. The concept of state vector is introduced. The state transition differential equation is derived based on the reduction of order of the motion equations, and the state transfer matrix is obtained by solving the state transition differential equation. By introducing the interface conditions between saturated frozen soil and elastic soil, the state transition matrix is simplified, and redundant state vectors are eliminated to establish the relationship between the incident wave, reflection wave and transmission wave. Two cases (incident P wave and incident SV wave) are considered, and the reflection and transmission amplitude ratios varying with the incident angle are calculated. The results indicate that the incident wave frequency, porosity, saturation and cementation parameters have a substantial influence on the reflection and transmission. This study provides a new research perspective for controlling the propagation of elastic waves in saturated frozen soils.</p></div>","PeriodicalId":456,"journal":{"name":"Acta Mechanica","volume":"236 12","pages":"7255 - 7276"},"PeriodicalIF":2.9,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145595266","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Correction: A comparative study of continuum-mechanics-based and structural-mechanics-based absolute nodal coordinate formulations for quadrature shell elements 修正：基于连续力学和结构力学的正交壳单元绝对节点坐标公式的比较研究

IF 2.9 3区工程技术

Acta Mechanica Pub Date : 2025-09-23 DOI: 10.1007/s00707-025-04496-2

Zixuan He, Huayi Li, Hongzhi Zhong

引用次数: 0

Definition of finite-rotation axes and interpretation of displacement modes 有限旋转轴的定义和位移模式的解释

IF 2.9 3区工程技术

Acta Mechanica Pub Date : 2025-09-17 DOI: 10.1007/s00707-025-04505-4

Ahmed A. Shabana

{"title":"Definition of finite-rotation axes and interpretation of displacement modes","authors":"Ahmed A. Shabana","doi":"10.1007/s00707-025-04505-4","DOIUrl":"10.1007/s00707-025-04505-4","url":null,"abstract":"<div><p>The same axis of rotation can be defined in different coordinate systems, leading to different form and different interpretation of the rotation matrix. This definition is particularly important in case of <i>successive rotations</i> due to the wide use of finite orientation parameters to define rigid- and flexible-body kinematics as well as deformation measures. As discussed in this paper, in case of successive rotations, the rotation axes can be defined using a single frame or multiple intermediate frames. As it is known, the <i>single-frame method</i> (SFM) and <i>multi-frame method</i> (MFM) lead to different order of multiplication of the rotation matrices. It is demonstrated that the coordinate system in which the rotation axis is defined determines the physical interpretation of the rotation matrix and deformation measures. In the SFM approach, the single frame can be global, cross section, or body frame. Nonetheless, the SFM sequence does not allow easy interpretation of the rotations as torsion and/or bending measures. In the MFM approach, on the other hand, the rotations are defined relative to intermediate frames; and such relative rotations can only be given physical interpretation as deformation measures in case of infinitesimal rotations. Such a physical interpretation is not valid in case of using noncommutative finite rotations. Regardless of which method (SFM or MFM) is used, the sequence of rotations cannot, in general, be reversed. Using <i>Rodrigues formula</i> with the analysis and results of this study, it is demonstrated that the <i>noncommutativity problem</i> is not attributed to the choice of the spatial orientation parameters but to the noncommutativity of the rotation matrices.</p></div>","PeriodicalId":456,"journal":{"name":"Acta Mechanica","volume":"236 12","pages":"7167 - 7179"},"PeriodicalIF":2.9,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00707-025-04505-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145595173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0