On stabilization of the node-based smoothed finite element method for free vibration problems

Bui Xuan Thang, Nguyen Xuan Hung, Ngo Thanh Phong
Author affiliations

Authors

  • Bui Xuan Thang University of Science - VNU - HCM
  • Nguyen Xuan Hung University of Science - VNU - HCM
  • Ngo Thanh Phong University of Science - VNU - HCM

DOI:

https://doi.org/10.15625/0866-7136/32/3/303

Abstract

The node-based smoothed finite element method (NS-FEM) has been recently proposed by Liu et al to enhance the computational effect for solid mechanics problems. However, it is evident that the NS-FEM behaves "overly-soft" and so it may lead to instability for dynamic problems. The instability can be clearly shown as spurious non-zero energy modes in free vibration analysis. In this paper, we present a stabilization of the node-based smoothed finite element method (SN-FEM) that is stable (no spurious non-zero energy modes) and more effective than the standard finite element method (FEM). Three numerical illustrations are given to evince the high reliability of the proposed formulation.

Downloads

Download data is not yet available.

Downloads

Published

28-10-2010

Issue

Section

Research Article

Most read articles by the same author(s)

1 2 > >>