基于有限元的地下管线弹性波探测正演

徐慧峰;钱彦岭;邱 静;尹晓虎

振动与冲击 ›› 2010, Vol. 29 ›› Issue (10) : 56-60,1.

PDF(2027 KB)
PDF(2027 KB)
振动与冲击 ›› 2010, Vol. 29 ›› Issue (10) : 56-60,1.
论文

基于有限元的地下管线弹性波探测正演

  • 徐慧峰1,2; 钱彦岭1; 邱 静1 ;尹晓虎3
作者信息 +

Forward modeling of elastic waves in detection of underground pipelines based on finite element method

  • XU Hui-feng1,2; QIAN Yan-ling1; QIU Jing1; Yinxiao-hu3
Author information +
文章历史 +

摘要


用有限元方法建立了地下管线弹性波探测系统模型,以瑞利阻尼渐变吸收层有效的模拟了无穷远边界。分析了力源激励的弹性波传播的方向特性。根据接收的回波信号,提出用相位检测判断管线阻抗特性的方法。设计了四种典型的管线分布,并进行了频谱分析,发现求解的探测系统传递函数能较好的反映管线分布的相关信息。并通过实验模型验证所做的分析。


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.

关键词

弹性波 / 地下管线探测 / 有限元 / 相位检测 / 传递函数

Key words

elastic waves / underground pipelines detection / finite element / phase detection / transfer function

引用本文

导出引用
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]. 振动与冲击, 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[J]. Journal of Vibration and Shock, 2010, 29(10): 56-60,1

PDF(2027 KB)

Accesses

Citation

Detail

段落导航
相关文章

/