| 冲击载荷下岩石动态应力-应变全图测试中的合理加载波形 |
| |
| 引用本文： | 李夕兵,古德生,赖海辉.冲击载荷下岩石动态应力-应变全图测试中的合理加载波形[J].爆炸与冲击,1993,13(2):125-130. |
| |
| 作者姓名： | 李夕兵 古德生 赖海辉 |
| |
| 作者单位： | 中南工业大学，中南工业大学，中南工业大学 湖南长沙 410083，湖南长沙 410083，湖南长沙 410083 |
| |
| 摘 要： | 用SHPB法测定岩石的动态应力-应变关系时,采用常规的等径冲击存在着明显的P-C振荡,严重地影响试验精度。为消除这种振荡,本文提出,在对岩石进行动态应力-应变全图测试时,应改变径冲头为锥形冲头,同时给出了两种冲头四种岩石的对比实验结果。
|
| 关 键 词： | 岩石动态实验技术 岩石动力学 应力波 |
ON THE REASONABLE LOADING STRESS WAVEFORMS DETERMINED BY DYNAMIC STRESS-STRAIN CURVES OF ROCKS BY SHPB |
| |
| Li Xibing,Gu Desheng,Lai Haihui.ON THE REASONABLE LOADING STRESS WAVEFORMS DETERMINED BY DYNAMIC STRESS-STRAIN CURVES OF ROCKS BY SHPB[J].Explosion and Shock Waves,1993,13(2):125-130. |
| |
| Authors: | Li Xibing Gu Desheng Lai Haihui |
| |
| Abstract: | In the measurement of dynamic parameters of rocks by SHPB subjected to rectangle loading, Pochhammer-Chree oscillations existed in incident, reflected, and transmitted waves result in a serious oscillation on the dynamic stress-strain curves. In order to eliminate this oscillation , this paper presents that the cylinder impact ram often used in SHPB should be changed into the truncated impact ram. For comparison, experimental results obtained by impact loading of two kinds of impact rams to four types of rocks are given. |
| |
| Keywords: | the dynamic experimental techniques of rocks rock dynamics stress waves |
| 本文献已被 CNKI 维普 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》下载全文 |
|
