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An interior-point algorithm for the minimization arising from 3D contact problems with friction

机译:用于最小化由3D摩擦接触问题引起的内点算法

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摘要

The paper deals with a variant of the interior-point method for the minimization of strictly quadratic objective function subject to simple bounds and separable quadratic inequality constraints. Such minimizations arise from the finite element approximation of contact problems of linear elasticity with friction in three space dimensions. The main goal of the paper is the convergence analysis of the algorithm and its implementation. The optimal preconditioners for solving ill-conditioned inner linear systems are proposed. Numerical experiments illustrate the computational efficiency for large-scale problems.
机译:本文讨论了一种内点方法的变体,该方法可以在严格限制和可分离二次不等式约束的情况下最小化严格二次目标函数。这种最小化是由于在三个空间维度上线性弹性与摩擦的接触问题的有限元近似引起的。本文的主要目标是算法的收敛性分析及其实现。提出了求解病态内部线性系统的最优预处理器。数值实验说明了大规模问题的计算效率。

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