On the accuracy of nodal stress computation in plane elasticity using finite volumes and finite elements

被引：21

作者：

Vaz, M., Jr. ^{[1
]}

Munoz-Rojas, P. A. ^{[1
]}

Filippini, G. ^{[2
]}

机构：

[1] Univ Estado Santa Catarina, Dept Mech Engn, Ctr Technol Sci, UDESC, BR-89223100 Joinville, Brazil

[2] Fed Technol Univ Parana, Electromech Div, BR-85884000 Medianeira, Brazil

来源：

COMPUTERS & STRUCTURES | 2009年 / 87卷 / 17-18期

关键词：

Finite volumes; Finite elements; Nodal stresses; Stress recovery schemes; FLUID-STRUCTURE INTERACTION; DYNAMIC FRACTURE PHENOMENA; FORMULATION; DEFORMATION; EQUATIONS; MESHES; VERTEX;

D O I：

10.1016/j.compstruc.2009.05.007

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

This paper addresses accuracy issues of nodal stresses in both finite elements and finite volumes. Strategies to evaluate nodal stresses for finite elements are also briefly discussed. Emphasis is placed on the application of finite volumes to solid mechanics and an overview of recent advancements is presented. Numerical simulation of test problems shows that accuracy of nodal stresses evaluated using finite elements is strongly dependent on the recovery strategy. In all cases, stress recovery at boundary nodal points renders large errors for all non-patch schemes. Contrastingly, finite volumes provide an accurate computation of nodal stresses, including at domain boundaries. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：1044 / 1057

页数：14

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