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A family of simple two-pass dual formulations for the finite element solution of contact problems

机译:一系列简单的两遍对偶公式,用于接触问题的有限元求解

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摘要

Simple, stable, unbiased algorithms for two-pass, two-body contact have until now eluded researchers in computational mechanics. This work examines the subject, starting from an interpolation scheme proposed in an earlier work. This method, though stable and unbiased, results in an exceedingly complex algorithm in three-dimensions. Motivated by the need for simplicity, a new formulation of the contact problem is introduced, which results in a family of simple, stable, geometrically unbiased elements. The starting point of these elements is any algorithm which is stable for the Signorini problem. A number of example problems are presented to compare the performance of the elements.
机译:迄今为止,简单,稳定,无偏的两遍,两体接触算法一直困扰着计算力学研究人员。这项工作从一个较早的工作中提出的插值方案开始研究这个主题。这种方法尽管稳定且无偏见,但在三维方面却导致了极其复杂的算法。出于对简单性的需求的动机,引入了接触问题的新公式,从而产生了一系列简单,稳定,几何无偏的元素。这些元素的起点是对Signorini问题稳定的任何算法。提出了许多示例问题来比较这些元素的性能。

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