爆炸压实W-Cu粉末的数值模拟与实验验证  

Numerical Simulation of Explosive Compaction of W-Cu Powder and Experiment Validation

作　　者：王占磊[1] 王慧萍[1] 王岭渠 侯中华[1] 

机构地区：[1]河南科技大学,河南洛阳471003 [2]巩义市技术监督局,河南巩义451200

出　　处：《稀有金属材料与工程》2014年第8期1997-2001,共5页Rare Metal Materials and Engineering

摘　　要：通过数值模拟研究了W-Cu混合粉末的爆炸压实过程。研究不同爆速对压实坯致密度的影响,分析了在爆速5000 m/s条件下粉体内冲击波的传播过程及粉体在冲击波作用下的变形规律,并分析了粉体中心的马赫反射现象。选取粉体侧壁单元的位移曲线来显示加载、卸载过程,对侧壁单元的位移曲线进行分析,以此作为粉体的压实程度来估算压实坯致密度。结果显示当爆速为5300 m/s时,压实坯可达到一个较大的致密度。将研究结果应用于W-Cu混合粉末的爆炸压实实验,实验与数值计算结果显示了较好的吻合性。The explosive compaction process of W-Cu powders was investigated by numerical simulation. The effect of detonation velocity on the density of the compact was studied. The spreading course of shock wave in powders and distortion rule of the powders were analyzed in the condition of 5000 m/s, and the mach reflection phenomena were also analyzed. The courses of loading and unloading were displayed by the displacement curves of side elements. The density of compacts was calculated by analyzing the curves. The results show that the density of compacts would arrive at a bigger value in the condition of 5300 m/s. The calculative results were applied to the experiment of explosive compaction, and the experiment results are consistent with the calculated

关 键 词：爆炸压实 W-CU 数值模拟 

分 类 号：TF124[冶金工程—粉末冶金]