| 爆炸荷载下结构响应的EMD分析 |
| |
| 引用本文： | 张义平,蒋卫东.爆炸荷载下结构响应的EMD分析[J].湖南科技大学学报(自然科学版),2007,22(3):9-12. |
| |
| 作者姓名： | 张义平 蒋卫东 |
| |
| 作者单位： | 1. 贵州大学,矿业学院,贵州,贵阳,550003
2. 中南大学,商学院,湖南,长沙,410083 |
| |
| 基金项目： | 贵州省科技攻关项目，贵州省教育厅科研项目，贵州省第六批优秀青年科技人才资助项目，教育部春晖计划项目 |
| |
| 摘 要： | 通过经验模态分解法(EMD)将信号分解为固有模态函数(IMF),结果表明震动信号是由不同频率的具有实际物理意义的固有模态函数分量组成.同时建立了爆炸荷载下的单自由度体系结构动态响应模型,并运用实例分析了结构在爆破震动下的动力放大效应.分析表明不同的IMF分量对结构的影响各不相同,两者频率越接近,其共振作用就越明显.结构对荷载的响应主要取决于不同幅值、不同频率的各IMF分量的共同作用.图5,表1,参11.
|
| 关 键 词： | 爆炸荷载 结构响应 频率 共振 |
| 文章编号： | 1672-9102（2007）03-0009-04 |
| 收稿时间： | 2007-01-10 |
| 修稿时间： | 2007-01-10 |
EMD Analysis of Structure Response under Blast Load |
| |
| ZHANG Yi-ping,JIANG Wei-dong.EMD Analysis of Structure Response under Blast Load[J].Journal of Hunan University of Science & Technology(Natural Science Editon),2007,22(3):9-12. |
| |
| Authors: | ZHANG Yi-ping JIANG Wei-dong |
| |
| Institution: | 1. Mining School, Guizhou University, Guiyang 550003, China; 2.School of Business, Central South University, Changsha 410083, China |
| |
| Abstract: | Signal was decomposed into Intrinsic Mode Function(IMF) by Empirical Mode Decomposition(EMD) method, it is found that the vibration signal is composed by IMFs with different frequency and practical physical meanings. In addition, the model of structure dynamic response to blasting load with single degree of freedom system was established, and dynamical ampliation of structure response to blasting vibration was analyzed with example. It is indicated that influence upon structure from different IMF is unlike, the both frequency nearer, the resonance action more evident, and the structure response to load is mainly lied on co-action of each IMF with different swing and frequency. |
| |
| Keywords: | EMD |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
