Holistic Approach to Mechanics of Heterogeneous Media

异构介质力学的整体方法

• 批准号: 9712227
• 负责人: Jacob Fish
• 金额: $ 9万
• 依托单位: Rensselaer Polytechnic Institute
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-09-15 至 2000-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9712227&HistoricalAwards=false
• 关键词: Holistic; Approach; Mechanics; Heterogeneous; Media

9712227 Fish The proposed research effort develops an experimentally calibrated mutiscale modeling approach for composite materials and structures aimed at accurately predicting the macromechanical (overall) structural response, such as critical deformation, vibration and buckling modes, as well as various failure modes on the mesomechanical (lamina) level, such as delamination and ply buckling, and on the micromechanical (the scale of microconstituents) level, such as debonding, microbuckhng, etc. Adaptive multiscale modeling approach developed in this research enables the analyst to start from a simple model, based on the classical step-by-step uncoupled approach, which may or may not adequately simulate the response, and then adaptively refine both the mathematical and numerical models to permit coupled multiscale ccisiderations, whenever and wherever these are needed. ***

9712227 Fish 拟议的研究工作为复合材料和结构开发了一种经过实验校准的多尺度建模方法，旨在准确预测宏观机械（整体）结构响应，例如临界变形、振动和屈曲模式，以及机械上的各种失效模式（层）水平，例如分层和层屈曲，以及微机械（微观成分的规模）水平，例如脱粘、微屈曲、本研究中开发的自适应多尺度建模方法使分析人员能够从一个简单的模型开始，基于经典的逐步解耦方法，该方法可能会或可能不会充分模拟响应，然后自适应地细化数学和数值模型允许随时随地进行耦合多尺度决策。 ***