| 塑性应变率的尺度效应 |
| |
| 引用本文： | 胡宇群,赵亚溥.塑性应变率的尺度效应[J].中国航空学报,2001,14(1). |
| |
| 作者姓名： | 胡宇群 赵亚溥 |
| |
| 作者单位： | HU Yu-qun1，2，ZHAO Ya-pu1 (1. LNM，Institute of Mechanics，CAS，Beijing 100080，China) (2. Dept. of Aircraft，Nanjing University of Aeronautics and Astronautics，Nanjing 210016，China) |
| |
| 基金项目： | National Natural Science Foundation of China (No.10072068) |
| |
| 摘 要： | 通过对相似模型中若干力学量和典型动力学实验中部分结果和结论的探讨分析，研究了动态载荷下率相关材料相似模型的尺度效应，阐述了塑性应变率具有的尺度效应对相似模型在动态载荷下的影响，指出了塑性应变率尺度效应的一个重要特征是，随着结构特征尺度的减小，其动力行为的应变率敏感效应增强。
|
| 关 键 词： | 塑性应变率 尺度效应 相似系数 动态本构方程 应变率敏感性 |
Scale Effect of Plastic Strain Rate |
| |
| HU Yu-qun,ZHAO Ya-pu.Scale Effect of Plastic Strain Rate[J].Chinese Journal of Aeronautics,2001,14(1). |
| |
| Authors: | HU Yu-qun ZHAO Ya-pu |
| |
| Institution: | HU Yu-qun1,2,ZHAO Ya-pu1 |
| |
| Abstract: | By analyzing some mechanical quantities and typical dynamic testing results for similar models, this paper studies the scale effect pertaining to similar models made of strain-rate dependent materials, and also describes the effect of plastic strain rate on the mechanical behavior of similar models under dynamic loading. It has been pointed out that the strain-rate sensitivity for dynamic behavior increases with the decrease of the characteristic dimension. |
| |
| Keywords: | plastic strain rate scale effect similarity coefficient dynamic constitutive equation strain-rate sensitivity |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
