详情

原文传递 Exploiting symmetries in the modeling and analysis of tires

题名：	Exploiting symmetries in the modeling and analysis of tires
作者：	Noor, Ahmed K.; Andersen, Carl M.; Tanner, John A.
关键词：	exploit；modeling；analysis；trie；ires；tire；strategy；element；loading；metric
摘要：	A simple and efficient computational strategy for reducing both the size of a tire model and the cost of the analysis of tires in the presence of symmetry-breaking conditions (unsymmetry in the tire material, geometry, or loading) is presented. The strategy is based on approximating the unsymmetric response of the tire with a linear combination of symmetric and antisymmetric global approximation vectors (or modes). Details are presented for the three main elements of the computational strategy, which include use of special three-field mixed finite-element models, use of operator splitting, and substantial reduction in the number of degrees of freedom. The proposed computational stategy is applied to three quasi-symmetric problems of tires linear analysis of anisotropic tires, through use of semianalytic finite elements, nonlinear analysis of anisotropic tires through use of two-dimensional shell finite elements, and nonlinear analysis of orthotropic tires subjected to unsymmetric loading. Three basic types of symmetry (and their combinations) exhibited by the tire response are identified.
报告类型：	科技报告