高压物理学报2011，Vol.25Issue(5)：435-443,9.
超高速撞击下钛基复合材料动力学行为研究
Dynamic Behavior of Titanium Matrix Composites under Hypervelocity Impact
摘要
Abstract
Based on experimental results,numerical simulations were performed to study the hypervelocity impact of aluminum balls against aluminum targets,verifying the reliability of the numerical model.Hypervelocity impact simulations under three different velocities of 5.52,7.00 and 8.00km/s against aluminum target and titanium matrix composite target with the same mass of the aluminum target were simulated.The process of aluminum balls with a diameter of 5.02 mm and titanium matrix composite balls with the same mass of the aluminum balls impacting aluminum shields and titanium matrix composite shields were analyzed by using a dynamic analysis program under the above three velocities,respectively.It can be found that the protective effect of the titanium matrix composite shields is more efficient than that of the aluminum shields when increasing the impact velocities.When the velocity is constant,the protective effect of titanium matrix composite shield against titanium matrix composite ball is good and the protective effect of aluminum shield against aluminum ball is good.With a theoretical analysis on impact process,it can be concluded that protective effect of the titanium matrix composite shields is more efficient than that of the aluminum shields.关键词
超高速撞击/钛基复合材料/光滑粒子法/数值模拟Key words
hypervelocity impact/titanium matrix composites/smoothed particle hydrodynamics method/numerical simulation分类
数理科学引用本文复制引用
宋卫东,栗建桥,刘海燕..超高速撞击下钛基复合材料动力学行为研究[J].高压物理学报,2011,25(5):435-443,9.基金项目
国家自然科学基金 （）
国家重点基础研究发展计划 （）
