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Intensity of stress singularity at a vertex and along the free edges of the interface in 3D-dissimilar material joints using 3D-enriched FEM

W. Attaporn1, H. Koguchi2
Graduate school of NUT, Nagaoka, Niigata, Japan
NUT, Nagaoka, Niigata, Japan

Computer Modeling in Engineering & Sciences 2009, 39(3), 237-262. https://doi.org/10.3970/cmes.2009.039.237

Abstract

In the present study, a stress singularity field along free edges meeting at a corner in a three-dimensional joint structure is investigated. The order of stress singularity is determined using an eigen analysis based on a finite element method. Intensities of stress singularity not only at the corner but also along the free edge of interface are determined directly without any post-processing by a new FEM formulation referred to as a three-dimensional enriched FEM. Result in the present analysis is also compared with that in another numerical method. It was slightly larger than the intensity of stress singularity, which was determined by a three-dimensional boundary element method (BEM).

Keywords

Intensity of stress singularity, 3D-enriched FEM, singular point, singularity corner, singularity line.

Cite This Article

Attaporn, W., Koguchi, H. (2009). Intensity of stress singularity at a vertex and along the free edges of the interface in 3D-dissimilar material joints using 3D-enriched FEM. CMES-Computer Modeling in Engineering & Sciences, 39(3), 237–262.



This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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