On the solution of multi-point constraints - Application to FE analysis of reinforced concrete structures

被引：26

作者：

Jendele, Libor ^{[1
]}

Cervenka, Jan ^{[1
]}

机构：

[1] Cervenka Consulting, Prague 16200, Czech Republic

来源：

COMPUTERS & STRUCTURES | 2009年 / 87卷 / 15-16期

关键词：

Dirichlet boundary conditions; Multi-point constraints; Finite element method; Embedded reinforcement modelling; Engineering practice; Mesh generation;

D O I：

10.1016/j.compstruc.2008.04.018

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

The paper presents an efficient way of implementing general multi-point constraint conditions in a finite element solver. The proposed method of applying and processing the multi-point constraints on the primary unknown variables of finite element method is computationally efficient and memory economical, because all constrained degrees of freedoms (DOFs) are already eliminated during the assembly of the global stiffness matrix and right-hand side vectors. The adopted concept has a wide range of use, and several of its possibilities are discussed. At the end of the paper, sample analyses of reinforced concrete structures are presented that demonstrate the advantages of the developed form for modelling discrete reinforcement bars in non-linear FE calculation in engineering practice. (C) 2008 Civil-Comp Ltd and Elsevier Ltd. All rights reserved.

引用

页码：970 / 980

页数：11