Continuum Mechanics and Thermodynamics最新文献

Explicit analytical representation for a transmission coefficient in the normal wave propagation through a multi-layered solid-fluid structure 正波通过多层固流结构时透射系数的显式解析表示

IF 1.9 4区工程技术

Continuum Mechanics and Thermodynamics Pub Date : 2025-05-26 DOI: 10.1007/s00161-025-01391-y

Mezhlum Sumbatyan, Mariya Chernikova

引用次数: 0

A functionally graded Green-Naghdi (type-III) thermoelastic medium with varying properties along two directions 一种沿两个方向具有不同性质的功能梯度Green-Naghdi （iii型）热弹性介质

IF 1.9 4区工程技术

Continuum Mechanics and Thermodynamics Pub Date : 2025-05-26 DOI: 10.1007/s00161-025-01395-8

Praveen Ailawalia, Ajay, Marin Marin, Andreas Öchsner

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A functionally graded hydro-poroelastic semiconductor material subjected to photo-thermoelasticity theory 基于光热弹性理论的功能梯度水孔弹性半导体材料

IF 1.9 4区工程技术

Continuum Mechanics and Thermodynamics Pub Date : 2025-05-15 DOI: 10.1007/s00161-025-01387-8

Marwa H. R. Ahmed, Shreen El-Sapa, Alaa A. El-Bary, Khaled Lotfy

{"title":"A functionally graded hydro-poroelastic semiconductor material subjected to photo-thermoelasticity theory","authors":"Marwa H. R. Ahmed, Shreen El-Sapa, Alaa A. El-Bary, Khaled Lotfy","doi":"10.1007/s00161-025-01387-8","DOIUrl":"10.1007/s00161-025-01387-8","url":null,"abstract":"<div><p>This paper presents a theoretical investigation of a functionally graded hydro-poroelastic semiconductor material subjected to photo-thermoelasticity theory. The material properties, including thermal conductivity, elasticity, and porosity, are assumed to vary spatially following a functionally graded distribution. A one-dimensional problem is formulated to analyze the coupled interactions between the hydro-semiconductor medium’s thermal, mechanical, and electronic transport phenomena. The governing equations incorporate hydrodynamic effects, poroelasticity, and semiconductor carrier transport under the influence of thermal and photonic excitation. The Laplace transform technique is employed to obtain analytical solutions in main physical fields. Numerical results are derived using inverse Laplace transformation, and the effects of functionally graded parameters on wave propagation and heat transport are examined. Graphical analysis illustrates the impact of grading index and porosity on the material’s response. The results highlight the significance of functional grading in tailoring the behavior of hydro-poroelastic semiconductors for advanced technological applications, including optoelectronic devices, photodetectors, and thermal management systems.</p></div>","PeriodicalId":525,"journal":{"name":"Continuum Mechanics and Thermodynamics","volume":"37 4","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143949699","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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A continuum thermodynamic approach to the phase-field method: the order parameter as internal state variable

IF 1.9 4区工程技术

Continuum Mechanics and Thermodynamics Pub Date : 2025-05-14 DOI: 10.1007/s00161-025-01383-y

Andreas Prahs, Daniel Schneider, Britta Nestler

{"title":"A continuum thermodynamic approach to the phase-field method: the order parameter as internal state variable","authors":"Andreas Prahs, Daniel Schneider, Britta Nestler","doi":"10.1007/s00161-025-01383-y","DOIUrl":"10.1007/s00161-025-01383-y","url":null,"abstract":"<div><p>The phase-field method is well established for simulating microstructure evolution in computational materials science, providing a numerically efficient tracking of interfaces and surfaces by means of an order parameter. The derivation of its evolution equation is usually based on a variational approach or a corresponding principle of virtual power. Both approaches consider the order parameter as an additional degree of freedom and assume a diffuse interface region from the outset. This work examines the interpretation of the order parameter as an internal state variable, instead of an additional degree of freedom, since it represents an observable rather than a controllable quantity. Furthermore, the phase-field method is considered as an approximation of the sharp interface theory of a continuum containing a singular surface. A Cauchy continuum with a material singular surface is considered as starting point. The evolution equation of the order parameter is derived consistently in the context of continuum thermodynamics by exploitation of the Clausius–Duhem inequality. In this context, the equation of heat conduction and the thermomechanical coupling is discussed regarding the diffuse interface region and the role of the latent heat due to phase evolution. Based on restrictions of the free energy, special cases of the evolution equation are presented. For a special case, the coincidence of the evolution equation obtained by the presented approach and the classical variational approach is demonstrated. Based on the presented approach, the classical Allen–Cahn/Ginzburg–Landau equation is obtained by assuming a spatially homogeneous temperature distribution.</p></div>","PeriodicalId":525,"journal":{"name":"Continuum Mechanics and Thermodynamics","volume":"37 4","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00161-025-01383-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143944388","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Asymptotic behaviour of throughflow solutions in the class of Jeffreys fluids Jeffreys流体中通流解的渐近行为

IF 1.9 4区工程技术

Continuum Mechanics and Thermodynamics Pub Date : 2025-05-06 DOI: 10.1007/s00161-025-01384-x

G. Arnone, F. Capone, R. De Luca, J. A. Gianfrani, F. Iovanna

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A novel class of electro-mechanical metamaterials for stress reduction through electric fields 一种新型的通过电场减少应力的机电超材料

IF 1.9 4区工程技术

Continuum Mechanics and Thermodynamics Pub Date : 2025-04-30 DOI: 10.1007/s00161-025-01385-w

Mischa Blaszczyk, Klaus Hackl

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Modeling and identification of residual stress fields in cylinders and plates 圆柱和板内残余应力场的建模与识别

IF 1.9 4区工程技术

Continuum Mechanics and Thermodynamics Pub Date : 2025-04-27 DOI: 10.1007/s00161-025-01388-7

Rostislav Nedin, Alexander Vatulyan

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Investigating nonlinear buckling and post-buckling characteristics of functionally graded porous cylindrical shells under external pressure and thermal conditions 研究了在外压力和热条件下功能梯度多孔圆柱壳的非线性屈曲和后屈曲特性

IF 1.9 4区工程技术

Continuum Mechanics and Thermodynamics Pub Date : 2025-04-26 DOI: 10.1007/s00161-025-01382-z

Habib Talati, Alireza Shaterzadeh

{"title":"Investigating nonlinear buckling and post-buckling characteristics of functionally graded porous cylindrical shells under external pressure and thermal conditions","authors":"Habib Talati, Alireza Shaterzadeh","doi":"10.1007/s00161-025-01382-z","DOIUrl":"10.1007/s00161-025-01382-z","url":null,"abstract":"<div><p>This paper investigates the post-buckling behavior of functionally graded porous (FGP) perfect/imperfect cylindrical shells under external pressure in a thermal environment. The properties of these porous cylindrical shells are assumed to be temperature-dependent, determined using the modified rule of mixture and Touloukian formulation. The governing equations are derived from classical shell theory and von Kármán-Donnell’s type of kinematic nonlinearity. The boundary layer theory of shell buckling, which accounts for nonlinear prebuckling deformations, large deflections in the post-buckling range, and initial geometric imperfections, is extended to FGP cylindrical shells. A two-step perturbation approach is employed to solve the post-buckling problem, determining the buckling loads and post-buckling equilibrium paths. Numerical parametric analysis, including three types of porosity distribution, is conducted to examine the effects of shell geometric parameters, material properties, and temperature rise on the post-buckling behavior of the FGP cylindrical shell. Numerical results indicate that the current method effectively and accurately resolves the problem, aligning with literature findings. It is observed that increases in geometric parameters related to length, radius-to-thickness ratio, porosity volume fraction, functionally graded volume fraction index, and temperature lead to a decrease in post-buckling load. Additionally, it is demonstrated that the porosity index significantly influences the post-buckling path of an FGP cylindrical shell.</p></div>","PeriodicalId":525,"journal":{"name":"Continuum Mechanics and Thermodynamics","volume":"37 3","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143877713","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

Electro-induced nonlinear stability of graphene platelets reinforced functionally graded dielectric plate 石墨烯平板强化功能梯度电介质板的电致非线性稳定性

IF 1.9 4区工程技术

Continuum Mechanics and Thermodynamics Pub Date : 2025-04-23 DOI: 10.1007/s00161-025-01381-0

Jinghua Zhang, Haorui Ren

{"title":"Electro-induced nonlinear stability of graphene platelets reinforced functionally graded dielectric plate","authors":"Jinghua Zhang, Haorui Ren","doi":"10.1007/s00161-025-01381-0","DOIUrl":"10.1007/s00161-025-01381-0","url":null,"abstract":"<div><p>The stability of composite structures are fundamental problems in continuum mechanics. In present study, considering piezoelectric and electrostrictive effects simultaneously, electro-induced nonlinear buckling and post-buckling characteristics of graphene platelets (GPL) reinforced functionally graded dielectric circular plates are examined. Firstly, equivalent dielectric constant and Young’s modulus of the intelligent composites with different GPL distribution patterns are calculated according to effective medium theory, in which the gradient characteristics, the imperfect combination between reinforcements and matrix, the interface electron tunnel and the Maxwell–Wagner–Silla polarization are considered. Then, the nonlinear displacement governing differential equations are derived according to von Kármán nonlinear plate theory and virtual work principle and solved by shooting method for different boundary conditions. The buckling critical voltage and post-buckling deflection-voltage path under various conditions are obtained. Finally, the effects of distribution pattern, gradient slope and geometrical dimension parameters of GPL, as well as interface phase size on the critical electrical parameters and post-buckling characteristics are examined by cross-scale analysis between micro and macro in detail. This research may offer theoretical guidance value for the engineering design of the intelligent structures.</p></div>","PeriodicalId":525,"journal":{"name":"Continuum Mechanics and Thermodynamics","volume":"37 3","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143861205","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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On an extended Hamilton principle for electro/magneto-thermo-mechanical materials with dissipative microstructure evolution 电/磁-热-机械材料耗散微观结构演化的扩展Hamilton原理

IF 1.9 4区工程技术

Continuum Mechanics and Thermodynamics Pub Date : 2025-04-12 DOI: 10.1007/s00161-025-01373-0

Sebastian Wolf, Philipp Junker

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