Hybrid Post-Processing Procedure for Displacement-Based Plane Elements

Xiaoming Chen, Song Cen, Jianyun Sun, Yungui Li

China State Construction Technical Center, Beijing, China.
Department of Engineering Mechanics, School of Aerospace, Tsinghua University, Beijing, China.

DOI: 10.4236/jamp.2013.16004                

Abstract

In the analysis of high-rise building, traditional displacement-based plane elements are often used to get the in-plane internal forces of the shear walls by stress integration. Limited by the singular problem produced by wall holes and the loss of precision induced by using differential method to derive strains, the displacement-based elements cannot always present accuracy enough for design. In this paper, the hybrid post-processing procedure based on the Hellinger-Reissner variational principle is used for improving the stress precision of two quadrilateral plane elements. In order to find the best stress field, three different forms are assumed for the displacement-based plane elements and with drilling DOF. Numerical results show that by using the proposed method, the accuracy of stress solutions of these two displacement-based plane elements can be improved.

Keywords

Finite Element; Displacement-Based Plane Element; Hybrid Post-Processing Procedure

Conflicts of Interest

The authors declare no conflicts of interest.

References

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