摘要
应用动力有限元方法分析含能材料中热点形成机理。在假定凝聚态含能材料为可压缩的情况下，研究圆形和椭圆形微孔洞附近介质在冲击作用下热－机械响应过程，结果显示冲击波强度、空隙率、微孔洞尺寸和形状、熔点对热点温升有强烈影响，并讨论粘塑性功和固相压缩成为主要机制的条件。
The mechanics of shock-induced hot spot formation in energetic materials is studied by using a finite element program- When the condensed phase of energetic materials is compressible, the configurations of hollow spheres and ellipsoids are used to simulate the dynamic and thermo-mechanical response of a single pore centered at the field of condensed TNT and RDX explosives. The results show that shock strength, porosity, cavity size and configuration,melting point have influences on hot spot formation. The conditions of which the mechanism of viscoplastic work and solid phase compression dominate are discussed
出处
《爆炸与冲击》
EI
CAS
CSCD
北大核心
1996年第4期333-340,共8页
Explosion and Shock Waves
关键词
含能材料
热点
粘塑性
固相压缩
ss: energetic materials, hot spot , viscoplastic work, solid phase compression
