Mechanics Research Communications最新文献_第10页

Generalizing rigid-foldable tubular structures of T-hedral type 广义t面体型刚性可折叠管状结构

IF 2.4 4区工程技术

Mechanics Research Communications Pub Date : 2023-10-01 DOI: 10.1016/j.mechrescom.2023.104151

K. Sharifmoghaddam , R. Maleczek , G. Nawratil

引用次数: 2

On the coupled linear theory of thermoelasticity for nanomaterials which triple porosity 三倍孔隙率纳米材料热弹性耦合线性理论

IF 2.4 4区工程技术

Mechanics Research Communications Pub Date : 2023-10-01 DOI: 10.1016/j.mechrescom.2023.104161

Merab Svanadze

引用次数: 1

Shape optimization of non-rigid origami leading to emerging bistability 非刚性折纸的形状优化导致出现双稳态

IF 2.4 4区工程技术

Mechanics Research Communications Pub Date : 2023-10-01 DOI: 10.1016/j.mechrescom.2023.104165

Yibo Wang, Ke Liu

{"title":"Shape optimization of non-rigid origami leading to emerging bistability","authors":"Yibo Wang, Ke Liu","doi":"10.1016/j.mechrescom.2023.104165","DOIUrl":"10.1016/j.mechrescom.2023.104165","url":null,"abstract":"<div><p><span><span>Origami structures are a type of thin-walled flexible structures that undergo large deformation<span>. Their inherent non-rigid characteristic empowers them with great potential for applications in space structures, metamaterials, and robotics. To understand the large deformation of origami structures, consideration of nonlinear mechanics is necessary. However, most origami structures are still designed by pure geometric approaches without considering their non-rigid behavior. In this work, we propose a computational design framework that incorporates nonlinear mechanics into the design procedure of origami. Guided by minimization of stored energy, under </span></span>prescribed displacement boundary conditions, we optimize the configuration of origami structures. Difficulties arise due to the complex energy landscape of origami structures that inevitably induces bifurcation. We develop strategies to keep track of a stable deformation branch during the optimization process. A surprising outcome is that our approach naturally leads to self-emerging </span>bistable structures, which is demonstrated by a series of numerical examples. We believe that our new approach would make substantial contribution to computational design of non-rigid origami structures, benefiting applications in origami-inspired solutions for science and engineering.</p></div>","PeriodicalId":49846,"journal":{"name":"Mechanics Research Communications","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47603909","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 review of theories to calculate pore pressures when fluids penetrate into rocks 流体进入岩石时孔隙压力计算理论综述

IF 2.4 4区工程技术

Mechanics Research Communications Pub Date : 2023-10-01 DOI: 10.1016/j.mechrescom.2023.104184

Catarina Baptista-Pereira, Bruno Gonçalves da Silva , Jay N. Meegoda

引用次数: 0

PREFACE: Brian Straughan 75th birthday celebratory issue 前言:布莱恩·斯特劳恩75岁生日庆祝特刊

IF 2.4 4区工程技术

Mechanics Research Communications Pub Date : 2023-10-01 DOI: 10.1016/j.mechrescom.2023.104176

Anthony D. Rosato

引用次数: 0

Rigidity analysis and mechanical properties of programmable origami tubes 可编程折纸管的刚度分析及力学性能

IF 2.4 4区工程技术

Mechanics Research Communications Pub Date : 2023-10-01 DOI: 10.1016/j.mechrescom.2023.104182

Huizhong Zhang , Qian Zhang , Xiao Liang , Kuan Yao , Ahmad BH Kueh , Jianguo Cai

{"title":"Rigidity analysis and mechanical properties of programmable origami tubes","authors":"Huizhong Zhang , Qian Zhang , Xiao Liang , Kuan Yao , Ahmad BH Kueh , Jianguo Cai","doi":"10.1016/j.mechrescom.2023.104182","DOIUrl":"10.1016/j.mechrescom.2023.104182","url":null,"abstract":"<div><p>The article presents the rigidity analysis and mechanical properties evaluation of ‘Flip-Flop’ typed interleaved origami tubes. This origami configuration is composed of two tubes arranged in an orthogonal manner. The rigidity of the basic unit is judged by using the loop-closure equation and dual quaternion methods while the corresponding compression performance is studied with the numerical simulation. A parametric analysis is performed to assess the effects of geometrical parameters on their compression performance. The parameters are thickness-to-length ratio (t/l) and angles (α, β) of the basic unit. The parametric analysis outcomes reveal that the interleaved origami tube has good programmability. Generally, when |α-β| is larger, the compression energy absorption characteristics in the X/Y-direction of the basic unit are greatly improved, while the decrease of angles α and β is conducive to improving the structural bearing capacity and compression energy absorption characteristics in the Z-direction. Fixing α while changing β has a greater effect on reducing the normalized mean stress ratio although, for a fixed β, a variation in α has no obvious contribution. Thus, highlighting the importance of the variation of β in influencing the compressive performance of the interleaved origami tubes as reference for future research.</p></div>","PeriodicalId":49846,"journal":{"name":"Mechanics Research Communications","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48257108","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 novel variational perturbation approach for formulating both linear and nonlinear acoustic model equations 一种新的变分摄动方法用于表述线性和非线性声学模型方程

IF 2.4 4区工程技术

Mechanics Research Communications Pub Date : 2023-09-26 DOI: 10.1016/j.mechrescom.2023.104198

Markus Scholle , Sara Ismail–Sutton , Philip H. Gaskell

引用次数: 0

Generalized continuum methodologies in acoustics: Selected case studies 声学中的广义连续统方法:选定案例研究

IF 2.4 4区工程技术

Mechanics Research Communications Pub Date : 2023-09-25 DOI: 10.1016/j.mechrescom.2023.104195

P.M. Jordan

引用次数: 0

Discovering asymptotic expansions for problems in mechanics using symbolic regression 用符号回归发现力学问题的渐近展开式

IF 2.4 4区工程技术

Mechanics Research Communications Pub Date : 2023-09-24 DOI: 10.1016/j.mechrescom.2023.104197

Rasul Abdusalamov , Julius Kaplunov , Mikhail Itskov

{"title":"Discovering asymptotic expansions for problems in mechanics using symbolic regression","authors":"Rasul Abdusalamov , Julius Kaplunov , Mikhail Itskov","doi":"10.1016/j.mechrescom.2023.104197","DOIUrl":"https://doi.org/10.1016/j.mechrescom.2023.104197","url":null,"abstract":"<div><p>Recently, symbolic regression (SR) has demonstrated its efficiency for discovering basic governing relations in physical systems. A major impact can be potentially achieved by coupling symbolic regression with asymptotic methodology. The main advantage of asymptotic approach involves the robust approximation to the sought for solution bringing a clear idea of the effect of problem parameters. However, the analytic derivation of the asymptotic series is often highly nontrivial especially, when the exact solution is not available.</p><p>In this paper, we adapt SR methodology to discover asymptotic series. As an illustration we consider three problem in mechanics, including two-mass collision, viscoelastic behavior<span> of a Kelvin–Voigt solid and propagation of Rayleigh–Lamb waves. The training data is generated from the explicit exact solutions of these problems. The obtained SR results are compared to the benchmark asymptotic expansions of the above mentioned exact solutions. Both convergent and divergent asymptotic series are considered. A good agreement between SR expansions and exact analytical results is observed. It is demonstrated that the proposed approach can be used to identify material parameters, e.g. Poisson’s ratio, and has high prospects for utilizing experimental and numerical data.</span></p></div>","PeriodicalId":49846,"journal":{"name":"Mechanics Research Communications","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49871331","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 view of considering regularization parameter as material constant 考虑正则化参数为材料常数的观点

IF 2.4 4区工程技术

Mechanics Research Communications Pub Date : 2023-09-18 DOI: 10.1016/j.mechrescom.2023.104196

Pomhyang Chu, Kumchol Yun, Kumsong Chu

引用次数: 0