A Comparison of Different Modeling Strategies for Predicting Effective Properties of 3D Woven Composites

Ricks, Trenton M ; Farrokh, Babak ; Bednarcyk, Brett A ; Pineda, Evan J

关键词: AIRCRAFT STRUCTURES;    BOUNDARY CONDITIONS;    COMPOSITE MATERIALS;    DELAMINATING;    ELASTIC PROPERTIES;    FINITE ELEMENT METHOD;    HOMOGENIZING;    MICROMECHANICS;    PERIODIC VARIATIONS;    PROPORTIONAL LIMIT;    STRUCTURAL ANALYSIS;    THREE DIMENSIONAL COMPOSITES;    THREE DIMENSIONAL MODELS;    WOVEN COMPOSITES;   

RP-ID  :  GRC-E-DAA-TN63731

学科分类：复合材料

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

Three-dimensional (3D) woven composites are an attractive means of achieving superior mechanical performance in aerospace structures. Limited analysis capability currently exists to predict both effective elastic and strength properties for these complex composites. In this study, a comparison of three modeling strategies was performed to assess the ability of the different methods to predict the effective elastic properties of four distinct 3D orthogonal woven composites. Two finite element techniques (in-plane and triply-periodic boundary conditions) and one method of cells technique, the Multiscale Generalized Method of Cells, were considered.