中文摘要：

利用一级气炮对高导无氧铜（OFHC）进行了圆柱以205m／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500m／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。

英文摘要：

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 indicates that the peak stresses in the plates computed by the three constitutive models are consistent with the experiments, while the deformations of the cylinder computed by the Z-A and S-C-G models, are more agreeable to the experiments than the J-C model. but, when the impact velocity is 500 m/s, the computed results by the three constitutive models appear markedly different from one another.