1. College of Mechatronics Engineering and Automation, National University of Defense Technology, Changsha 410073, China;2. Unit 91287 of PLA, Shanghai 200083, China; 3. Equipment Department, Unit 71375 of PLA, Weifang 261041, China
Abstract: A finite element model of elastic waves in detection of underground pipelines was established. And the infinite boundary was realized by an absorbing layer with gradually increased Rayleigh damping. Four models with typical space relationship of pipelines were studied, and the frequency spectral character of back waves was analyzed. The results show that transfer functions of detection systems can reveal some space information of underground pipelines. The calculation and analyses above are in good agreement with experimental results.
徐慧峰;钱彦岭;邱 静;尹晓虎. 基于有限元的地下管线弹性波探测正演[J]. , 2010, 29(10): 56-60,1.
XU Hui-feng;QIAN Yan-ling;QIU Jing;Yinxiao-hu. Forward modeling of elastic waves in detection of underground pipelines based on finite element method. , 2010, 29(10): 56-60,1.