Holistic Approach to Mechanics of Heterogeneous Media

9712227 Fish所提出的研究工作为复合材料和结构开发了一种实验校准的多尺度建模方法，旨在准确预测宏观力学（整体）结构响应，如临界变形、振动和屈曲模式，以及细观力学（层）水平上的各种失效模式，如分层和层屈曲，在微机械方面，（微观成分的尺度）水平，如脱粘，microbuckhng等。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，基于经典的分步解耦方法，该方法可能会或可能不会充分模拟响应，然后自适应地改进数学和数值模型，以允许耦合的多尺度考虑，无论何时何地需要这些。 ***

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. ***