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Analysis of singular integral of fast multipole-BEM applied in three-dimensional elastic contact problem

机译:快速多极BEM在三维弹性接触问题中的奇异积分分析

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Fast multipole boundary element method (FM-BEM) is applied in three-dimensional elastic contact problem,but the singular integral influence calculation efficient.How to solve singular integral is become an important problem for improving FM-BEM.In this paper,Taylor series expansion and Laplace transformation were introduced; it can be used to improve the singular integral.After Laplace transformation,the singular integral is written as exponential series form,which can be suit for fast multipole method.It is not only solving singularity,but also suit fast calculation.This method improves the calculation time and calculation accurate of FM-BEM.
机译:快速多极边界元法(FM-BEM)应用于三维弹性接触问题,但奇异积分影响计算效率。若干奇异积分是改善FM-BEM的重要问题。本文,泰勒系列介绍了扩张和拉普拉斯变换;它可以用来改善单数积分。在拉普拉斯变换中,单数积分被用作指数系列形式,可以适合快速的多极方法。它不仅是解决奇点,而且适合快速计算。这方法改善了FM-BEM的计算时间和计算精确。

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