美俄开展的铜材料动态屈服强度实验研究  

A Series of Experiments Carried Out by the United States and Russia to Determine the Dynamic Yield Strength of Copper

作　　者：焦晓静[1] 张平[1] 韩锋[1] 

机构地区：[1]西北核技术研究所,陕西西安710024

出　　处：《核电子学与探测技术》2008年第3期495-499,共5页Nuclear Electronics & Detection Technology

摘　　要：本文介绍了美国洛斯.阿拉莫斯国家实验室和俄罗斯联邦核中心合作完成的高应变率系列实验RHSR-0,1,2。实验的目的是通过铜材料表面正弦螺纹的波幅增长率来确定铜的动态屈服强度。实验中利用两级爆炸驱动脉冲功率发生器来产生所需的35MA强电流,采用了三层套管系统(铝-介质-铜)和径向X-光照相技术,所得到的最终实验结果与理论模型的预测值基本一致,说明利用该实验原理来确定材料的动态屈服强度是可行的。： A series of high strain rate experiments carried out by LANL and VNIIEF are introduced in this paper. The joint experiments RHSR-0, 1,2 were completed to determine the dynamic yield strength of copper based the amplitude growth rate of the sinusoidal perturbations on the copper sample surface. A two-stage explosively driven pulsed-power generator was used to produce the required 35-MA current. A three-layer liner system （Al-dielectric-Cu） and a method of radial radiography were used. The obtained experiment results corresponded to the predictions of the theoretical models. It turned out to be feasible to use this experiment setup to determine the dynamic yield strength of materials.

关 键 词：屈服强度 应变率 爆炸驱动脉冲功率发生器 

分 类 号：O341[理学—固体力学]