爆轰波碰撞聚能效应及其数值分析  

Simulation analysis of detonation wave collision munroe effect

作　　者：缪玉松[1] 李晓杰[1,2] 闫鸿浩[1] 王小红[1] 孙俊鹏[3] 

机构地区：[1]大连理工大学工程力学系,辽宁大连116024 [2]大连理工大学工业装备结构分析国家重点实验室,辽宁大连116024 [3]大连经济技术开发区金源爆破工程有限公司,辽宁大连116600

出　　处：《工程爆破》2016年第5期45-49,共5页Engineering Blasting

基　　金：国家自然科学基金项目(10972051,11272081)

摘　　要：为了掌握爆轰波碰撞时的爆压和能量汇聚的规律,对爆轰波各种碰撞的爆压变化进行研究。首先基于爆轰波碰撞理论分析.得出爆轰波在正碰撞、斜碰撞和马赫反射三种条件下的爆压变化,确定马赫反射发生的条件,然后绘制入射角、偏离角和反射角间的关系曲线。应用Ls-dyna数值软件对爆轰波碰撞产生马赫反射的过程进行模拟。对比模拟和理论计算结果得知.对于多方指数为2.4的铵油炸药,马赫反射发生在斜爆轰波入射角为46.4°时,此时马赫波后压强达到最大值13.2 GPa,并在马赫波后形成高压区域。The detonat ion pressure changes under f rontal coll ision, oblique reflect ion and Mach reflect ion based on the deto-nation collision theory was analyzed. Numerical software Ls-dyna was used to simulate the detonation wave collision process. The results of simulation and theoretical calculation were compared. For ANFO,whose polytropic exponent is 2. 4,Mach reflection occurs when the incident angle of the oblique detonation wave is 46. 4°,and the detonation pressure can reach tol3. 2 Gpa and a high pressure zone is formed after Mach reflection. The results can provide a good guidance on the theory and practice research of detonation wave collision.

关 键 词：爆轰波 爆轰波碰撞 聚能效应 马赫反射 连续起爆 

分 类 号：TD234.47[矿业工程—矿井建设]