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A simple comparison between two 3D time domain elastodynamic boundary element formulations

机译：两种3D时域弹性动力学边界元公式的简单比较

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摘要

The three-dimensional transient boundary element method for elastodynamic analysis is studied here to verify its performance concerning some required features when solving practical problems. The classical formulation was established more than 10 years ago and has already been applied several times, mainly in the context of infinite domain analysis. In this work the classical fundamental solution is compared with an alternative one in which a fundamental solution based on the unit impulse is assumed distributed over a time interval. Some interesting aspects of both solutions, regarding the result confidence for practical analysis, are also discussed in the paper.
机译：本文研究了用于弹性力学分析的三维瞬态边界元方法，以验证其在解决实际问题时与某些必需特征有关的性能。经典公式建立于十多年前，并且已经在主要在无限域分析的背景下应用了数次。在这项工作中，将经典的基本解决方案与另一种方案进行了比较，在另一种方案中，假定基于单位脉冲的基本解决方案分布在时间间隔内。本文还讨论了这两种解决方案的一些有趣方面，涉及对实际分析的结果置信度。

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