华中科技大学学报：自然科学版2012，Vol.40Issue(5)：37-40,45,5.
低速撞击下矩形板动态断裂试验及数值仿真
Dynamic fracture test and numerical simulation of rectangular plate under low velocity collision
摘要
Abstract
Based on the rectangular plate collision test, a series of low velocity impact tests and numerical simulation results were given to examine the fracture characteristics of plates struck by a sharp nosed project. The Johnson-Cook constitutive and failure model were used in numerical simulation and the mesh size effect was considered. The crash worthiness and fracture characteristics of different thickness plate were discussed. The results show that the parameters of the failure model and mesh size in the paper can predict the fracture process exactly, and increasing the thickness of plate can improve the crashworthiness obviously.关键词
低速碰撞/矩形板/动态断裂/Johnson-Cook模型/数值仿真Key words
low velocity collision/rectangular plate/dynamic fracture/Johnson-Cook model/numerical simulation分类
土木建筑引用本文复制引用
张涛,陈继恩,谢凡,刘土光..低速撞击下矩形板动态断裂试验及数值仿真[J].华中科技大学学报：自然科学版,2012,40(5):37-40,45,5.基金项目
国家自然科学基金资助项目（10702022）. （）
