Abstract
In this work, we further extended the face-based smoothed finite element method (FS-FEM) for modal analysis of three-dimensional solids using four-node tetrahedron elements. The FS-FEM is formulated based on the smoothed Galerkin weak form which employs smoothed strains obtained using the gradient smoothing operation on face-based smoothing domains. This strain smoothing operation can provide softening effect to the system stiffness and make the FS-FEM provide more accurate eigenfrequency prediction than the FEM does. Numerical studies have verified this attractive property of FS-FEM as well as its ability and effectiveness on providing reliable eigenfrequency and eigenmode prediction in practical engineering application.
Original language | English |
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Pages (from-to) | 140-150 |
Number of pages | 11 |
Journal | Acta Mechanica Solida Sinica |
Volume | 26 |
Issue number | 2 |
DOIs | |
Publication status | Published - 1 Apr 2013 |