TITLE:
Hybrid Post-Processing Procedure for Displacement-Based Plane Elements
AUTHORS:
Xiaoming Chen, Song Cen, Jianyun Sun, Yungui Li
KEYWORDS:
Finite Element; Displacement-Based Plane Element; Hybrid Post-Processing Procedure
JOURNAL NAME:
Journal of Applied Mathematics and Physics,
Vol.1 No.6,
November
28,
2013
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.