Adaptive multiscale modeling and analysis of nonlinear thermoelastic composites

非线性热弹性复合材料的自适应多尺度建模和分析

• 批准号: 35286377
• 负责人: Professor Dr.-Ing. Peter Wriggers
• 金额: --
• 依托单位: Institut für Kontinuumsmechanik (IKM)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2007
• 资助国家: 德国
• 起止时间: 2006-12-31 至 2014-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/35286377?language=en
• 关键词: Adaptive; multiscale; modeling; analysis; nonlinear

Adaptive multiscale modeling and analysis of heterogeneous materials is a research theme that is attracting a growing interest in the field of computational mechanics. Based on a scale adaptation approach that was developed during the first phase of this research project, a partial shift of research emphasis from path-dependent purely mechanical problems to path-independent multiphysics problems is proposed as a previously unexplored theme of adaptivity. Through a series of multiscale problems starting with linearized thermal conduction to fully coupled nonlinear thermoelasticity in composite media, the fundamental contributions of the proposed research agenda are aimed towards an efficient and verifiable adaptive computational strategy based on novel thermomechanical homogenization techniques. In this sense, this proposal will also assist in the efforts towards the establishment of robust and practically relevant adaptive multiscale approaches that are needed for the analysis of similar microheterogeneous problems in a multiphysics context.

异质材料的自适应多尺度建模和分析是一个研究主题，在计算力学领域引起了越来越多的兴趣。基于该研究项目第一阶段开发的尺度适应方法，提出将研究重点从路径依赖的纯机械问题部分转移到路径无关的多物理场问题，作为先前未探索的适应性主题。通过从复合介质中的线性热传导到完全耦合非线性热弹性的一系列多尺度问题，所提出的研究议程的基本贡献旨在基于新型热机械均质化技术的高效且可验证的自适应计算策略。从这个意义上说，该提案还将有助于建立鲁棒且实际相关的自适应多尺度方法，这些方法是在多物理场背景下分析类似的微观异质问题所需的。

项目成果

Effects of Debonding on Thermal Conduction and Humidity Diffusion at Mesoscale of Concrete

• DOI: 10.1002/pamm.201410232
• 发表时间: 2014-12
• 期刊: PAMM
• 作者: Tao Wu;P. Wriggers

Multiscale diffusion–thermal–mechanical cohesive zone model for concrete

• DOI: 10.1007/s00466-015-1149-y
• 发表时间: 2015-05
• 期刊: Computational Mechanics
• 影响因子: 4.1
• 作者: T. Wu;P. Wriggers

Multiscale hydro-thermo-chemo-mechanical coupling: Application to alkali–silica reaction

• DOI: 10.1016/j.commatsci.2013.12.029
• 发表时间: 2014-03
• 期刊: Computational Materials Science
• 影响因子: 3.3
• 作者: Tao Wu;I. Temizer;P. Wriggers