激光支持爆轰波的仿真研究  

Simulation Research on Laser-Supported Detonation Wave

作　　者：胡雅骥[1] 李应红[1] 汪诚[1] 马壮[1] 

机构地区：[1]空军工程大学工程学院,西安710038

出　　处：《宇航材料工艺》2009年第2期34-37,共4页Aerospace Materials & Technology

基　　金：国防预研基金(513270103)

摘　　要：采用了爆轰波的C-J起爆模型,计算了激光支持爆轰波初始参数,得到激光功率密度与爆轰波波面初始参数的关系。利用流体力学的方法建立爆轰波在靶与约束层双重约束作用下的二维辐射膨胀模型,用Fluent软件进行仿真研究,得到了激光冲击强化后不同时间对应的爆轰波压力和轴向速度分布,仿真结果与激光冲击强化GH742试件后表面残余应力分布的实验结果一致。The initial parameters laser-supported detonation wave and relationship between laser power density and initial parameters of detonation wave＇s surface were calculated by using C -J theory of detonation wave model. Two-dimensional model of self-emission expansion development under both restraint layer and target constraint was es- tablished by using hydromechanical method. Then by using Fluent, the hydromechanics analytical software, detonation wave pressure and axis velocity distribution after laser shock processing of different time were found out. Simulation result was consistent with test result of surface residual stress distribution of effectively shocked GH742 specimen.

关 键 词：激光冲击强化 数值仿真 爆轰波 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术] TB34[自动化与计算机技术—计算机科学与技术]