“Causal” shape functions in the time domain boundary element method

被引：0
|
作者：
A. Frangi
机构：
[1] Department of Structural Engineering,
[2] Politecnico di Milano P.za Leonardo da Vinci 32,undefined
[3] 20133 Milano,undefined
[4] Italy,undefined
来源：
Computational Mechanics | 2000年 / 25卷
关键词：
Wave Propagation; Time Integration; Domain Boundary; Analytical Time; Propagation Problem;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Since failing to respect the causality condition has been identified as one of the main sources of inaccuracies in the time domain boundary element method for elastodynamics and scalar wave propagation problems, in this contribution new shape functions are investigated, which permit a more accurate simulation of the continuous propagation of wave fronts. The performance of these shape functions in 2D scalar wave propagation problems is tested both for the potential (displacement) and for the time gradient (velocity) equations. Analytical time integrations are developed and numerical results are presented.
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页码：533 / 541
页数：8
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