材料科学与工程学报2012，Vol.30Issue(4)：615-619,624,6.
含分层损伤缝合复合材料层板的剩余压缩强度
Prediction of Residual Compressive Strength of Stitched Composite Laminates with a Delamination
孙浩 1许希武 1郭树祥1
作者信息
- 1. 南京航空航天大学机械结构力学及控制国家重点实验室,江苏南京210016
- 折叠
摘要
Abstract
Based on a progressive damage method, the mechanical behaviors of stitched composite laminates containing initial delamination were investigated. A finite element （FE） model was established to predict the residual compressive strength through ABAQUS. Laminate buckling and delamination propagation were considered during the analytical process. The failures of laminates , interlaminar and stitching were simulated by UMAT subroutine embedded truss elements were used to provide the bridge-forces of stitching. Hashin criterion and stiffness reduction method were introduced to predict fiber failure and matrix failure. The progressive damage process was investigated and the damage mechanisms were analyzed in detail. Effects of different stitching parameters on residual compressive strength were discussed. The predicted failure modes and strength have excellent agreement with experimental results. It shows that stitching increases laminate buckling load-capacity, restrains delamination propagation and increases the residual compressive strength.关键词
复合材料/层板/缝合/剩余压缩强度/渐进损伤Key words
composite laminates stitch residual compressive strength/progressive damage分类
通用工业技术引用本文复制引用
孙浩,许希武,郭树祥..含分层损伤缝合复合材料层板的剩余压缩强度[J].材料科学与工程学报,2012,30(4):615-619,624,6.
