爆炸与冲击2019，Vol.39Issue(4)：042101-1-042101-8,8.
爆轰加载下金属锡层裂破碎数值模拟
Numerical simulation on spallation and fragmentation of tin under explosive loading
摘要
Abstract
Spallation and fragmentation of tin, a low-melting point metal under explosive loading were numerically simulated. The numerical method and material model used were validated by the experimental results. Thereby, the temporal evolution and spatial distribution of the physical quantities in the Sn specimens were compared to explore the interaction between the stress waves and the material in the specimen under impact loading and unloading. Furthermore, the dynamic behaviors of the specimens with various thicknesses under explosive loading were in-depth analyzed to further understand the evolution mechanism of the spallation and fragmentation under the combination action of the reflective rarefaction wave from the free surface, the lateral rarefaction wave and the incident rarefaction wave. The results show that for the thin specimen, the early spallation and fragmentation are dominated by the reflective rarefaction wave. With increasing the thickness of the specimen, the region dominated by the reflective rarefaction wave becomes smaller, and meanwhile the region dominated by the incident rarefaction wave and the lateral rarefaction wave becomes larger.关键词
爆轰加载/ 金属锡/ 层裂破碎/ 应力波/ 演化机制/Key words
explosive loading/ tin/ spallation and fragmentation/ stress wave/ evolution mechanism/分类
数理科学引用本文复制引用
贺年丰,任国武,陈永涛,郭昭亮..爆轰加载下金属锡层裂破碎数值模拟[J].爆炸与冲击,2019,39(4):042101-1-042101-8,8.基金项目
国家自然科学基金 （）
