Analysis of Progressive Damage in Cross-Ply and Quasi-Isotropic Panels Subjected to Quasi-Static Indentation

Song, Kyongchan ; Leone, Frank A ; Rose, Cheryl A

关键词: COMPOSITE STRUCTURES;    CONTINUUM MECHANICS;    DECOMPOSITION;    DELAMINATING;    FAILURE ANALYSIS;    IMPACT DAMAGE;    PLY ORIENTATION;    THREE DIMENSIONAL MODELS;    AIRCRAFT STRUCTURES;    COMPRESSIBILITY;    DAMAGE ASSESSMENT;    DESIGN ANALYSIS;    IMPACT TESTS;    MATHEMATICAL MODELS;    PLATES (STRUCTURAL MEMBERS);    STRUCTURAL DESIGN;   

RP-ID  :  NF1676L-27401

学科分类：复合材料

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

The performance of a three-dimensional continuum damage mechanics (CDM) model for intralaminar damage, coupled with a cohesive zone model for delamination, is examined for damage prediction in cross-ply and quasi-isotropic laminated plates subjected to quasi-static transverse indentation. Details of the CDM model based on the deformation gradient decomposition (DGD) method and the finite element (FE) modeling strategy are presented and discussed. Critical features of the damage model and FE modeling approach are assessed by comparing analysis predictions to experimental data for cross-ply and quasi-isotropic panels in which damage is dominated by complex interactions between matrix cracks and delaminations.