| 介质非均匀性对加卸载响应比峰值异常特征时间影响的数值研究 |
| |
| 引用本文： | 张浪平,李志雄,尹祥础,梁乃刚. 介质非均匀性对加卸载响应比峰值异常特征时间影响的数值研究[J]. 工程力学, 2011, 0(9): 44-50,58 |
| |
| 作者姓名： | 张浪平 李志雄 尹祥础 梁乃刚 |
| |
| 作者单位： | 中国地震局地震预测研究所;中国科学院力学研究所非线性力学国家重点实验室; |
| |
| 基金项目： | 国家自然科学基金项目(41004018); 中国地震局地震预测研究所基本科研业务专项项目(02092425) |
| |
| 摘 要： | 加卸载响应比方法为非均匀脆性介质的灾变预测提供了新的思路，该方法用加载与卸载响应的差别来定量刻画介质的损伤演化过程。已有的岩石实验研究和地震震例研究，发现在岩石破裂或者地震发生之前，加卸载响应比都会出现异常明显的升高及回落，表明加卸载响应比峰值异常具有良好的灾变前兆意义。震例研究中发现，加卸载响应比峰值异常特征时间呈现...
|
| 关 键 词： | 加卸载响应比 链网模型 灾变前兆 非均匀脆性介质 损伤演化 |
NUMERICAL SIMULATION RESEARCH ON THE INFLUENCE OF MATERIAL HETEROGENEITY ON CHARACTERISTIC TIME OF LOAD/UNLOAD RESPONSE RATIO'S PEAK ABNORMITY |
| |
| ZHANG Lang-ping,,LI Zhi-xiong,YIN Xiang-chu,LIANG Nai-gang. NUMERICAL SIMULATION RESEARCH ON THE INFLUENCE OF MATERIAL HETEROGENEITY ON CHARACTERISTIC TIME OF LOAD/UNLOAD RESPONSE RATIO'S PEAK ABNORMITY[J]. Engineering Mechanics, 2011, 0(9): 44-50,58 |
| |
| Authors: | ZHANG Lang-ping LI Zhi-xiong YIN Xiang-chu LIANG Nai-gang |
| |
| Affiliation: | ZHANG Lang-ping1,2,LI Zhi-xiong1,YIN Xiang-chu1,LIANG Nai-gang2(1.Institute of Earthquake Science,China Earthquake Administration,Beijing 100036,China,2.State Key Laboratory of Nonlinear Mechanics,Institute of Mechanics,Chinese Academy of Sciences,Beijing 100190,China) |
| |
| Abstract: | The Load/Unload Response Ratio(LURR) method is proposed as a new approach to predict the failure of heterogeneous brittle materials,namely using the ratio between response rates occurred during the time periods of loading and unloading to describe the process of damage evolution quantitatively.In laboratory studies and inspection of real earthquake cases we have found that the LURR time series climb to an anomalously high peak and then decrease rapidly prior to the rupture of the rock specimens or the occur... |
| |
| Keywords: | Load/Unload Response Ratio(LURR) Chain-Network Model catastrophic failure precursor heterogeneous brittle media damage evolution |
| 本文献已被 CNKI 等数据库收录！ |
