首页> 外文会议>Asia-Pacific Conference on Shock amp; Impact Loads on Structures; 20031112-14; Changsha, Hunan,(CN) >NUMERICAL MODEL OF THE DAMPING-SOLVENT EXTRACTION METHOD IN THE TIME DOMAIN AND APPLICATION TO THE SOLUTION OF WAVE SCATTERING PROBLEMS
【24h】

NUMERICAL MODEL OF THE DAMPING-SOLVENT EXTRACTION METHOD IN THE TIME DOMAIN AND APPLICATION TO THE SOLUTION OF WAVE SCATTERING PROBLEMS

机译:时间域阻尼溶剂提取方法的数值模型及其在波散射问题求解中的应用

获取原文
获取原文并翻译 | 示例

摘要

Based on the damping solvent extraction method (DSEM), A refined sub-regional time domain reciprocal procedure in precise step-by-step integration scheme is proposed to deal with the problems of wave scattering at the cavity surface in unbounded medium with inhomogeneous material or irregular geology, in which the radiation condition of the unbounded domain is automatically satisfied, and the frequency-dependence or convolution integral, as required in other algorithms in time domain, are synchronously avoided. The numerical implementation of the algorithm is given in detail and suitable for the case that the geometric structure of cavity surface is complicated. The wave scattering at the boundary of cylindrical cavity in 2D infinite space with the horizontally incident SV-waves conditions is simulated to validate the proposed method. The numerical results are compared with the solutions obtained by analytical formula and the cloning element method. It is indicated that the new proposed procedure is of good accuracy and feasibility, especially for the middle and low frequency range in seismic analyses. Furthermore, the numerical analysis example also shows that the dispersion effect of infinite media plays an important role in wave scattering by the local geometric surface.
机译:基于阻尼溶剂萃取法(DSEM),提出了一种精细的分步时域倒数精确分步积分程序,以解决无边界材料或非均质材料在空腔表面的波散射问题。同时避免了不规则地质,其中无界域的辐射条件自动得到满足,并且避免了时域其他算法所要求的频率相关性或卷积积分。详细给出了该算法的数值实现方法,适用于腔体表面几何结构复杂的情况。模拟了二维无限空间中圆柱腔边界处水平入射SV波条件下的波散射,验证了该方法的有效性。将数值结果与通过解析公式和克隆元素方法获得的解进行比较。结果表明,所提出的新方法具有良好的准确性和可行性,特别是对于地震分析中的中低频范围。此外,数值分析实例还表明,无限介质的色散效应在局部几何表面的波散射中起着重要作用。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号