| 高导无氧铜圆柱-平板冲击实验及不同本构模型效果比较 |
| |
| 引用本文： | 吴善幸,陈大年,胡金伟,张铎,金扬辉,王焕然.高导无氧铜圆柱-平板冲击实验及不同本构模型效果比较[J].爆炸与冲击,2009,29(3):295-299. |
| |
| 作者姓名： | 吴善幸 陈大年 胡金伟 张铎 金扬辉 王焕然 |
| |
| 作者单位： | 1.西北工业大学航天学院，陕西 西安 710072; |
| |
| 摘 要： | 利用一级气炮对高导无氧铜(OFHC)进行了圆柱以205 m/s速度冲击平板实验，并进行了数值模拟。用锰铜应力计测试了靶中应力随时间的变化，并进行了回收观测。采用Johnson-Cook(J-C)、Zerilli-Armstrong(Z-A)、Steinberg-Cochran-Guinan(S-C-G)3种本构模型对实验进行了数值模拟。实验结果与数值模拟结果比较表明:就峰值应力而言，采用J-C、Z-A及S-C-G本构模型的计算结果都比较接近实验；就圆柱变形而言，Z-A及S-C-G模型的计算较J-C模型结果更符合实验。然而，速度为500 m/s冲击实验的数值模拟结果表明:3种本构模型的计算结果差异明显。
|
| 关 键 词： | 固体力学 本构模型 冲击实验 高导无氧铜 圆柱 平板 |
A cylinder-plate impact test for oxygen-free high-conductivity copper and comparison of effects of three constitutive models |
| |
| WU Shan-xing,CHEN Da-nian,HU Jin-wei,ZHANG Duo,JIN Yang-hui,WANG Huan-ran.A cylinder-plate impact test for oxygen-free high-conductivity copper and comparison of effects of three constitutive models[J].Explosion and Shock Waves,2009,29(3):295-299. |
| |
| Authors: | WU Shan-xing CHEN Da-nian HU Jin-wei ZHANG Duo JIN Yang-hui WANG Huan-ran |
| |
| Institution: | 1.School of Astronautics, Northwestern Polytechnical University, Xi’an 710072, Shaanxi, China;2.Mechanics & Materials Science Research Center, Ningbo University,Ningbo 315211, Zhejiang, China |
| |
| Abstract: | An oxygen-free high-conductivity copper(OFHC) cylinder was driven by a single-stage gun to impact OFHC plates at the velocity of 205 m/s.The longitudinal stress-time traces in the plates were recorded by the manganin stress gauge and the recovered samples were observed.And the longitudinal stress-time traces in the plates were computed by using the Johnson-Cook(J-C),Zerilli-Armstrong(Z-A) and Steinberg-Cochran-Guinan(S-C-G) constitutive models.Comparison between the experimental and computational results in... |
| |
| Keywords: | solid mechanics constitutive models impact test oxygen-free high-conductivity copper cylinder plate |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《爆炸与冲击》浏览原始摘要信息 |
| 点击此处可从《爆炸与冲击》下载免费的PDF全文 |
