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- Title
Analysis method useful for calculating various interface stress intensity factors efficiently by using a proportional stress field of a single reference solution modeling.
- Authors
Oda, Kazuhiro; Ashikari, Shunsuke; Noda, Nao-Aki
- Abstract
This paper has proposed an efficient analysis method to calculate interface stress intensity factors (SIFs) based on a proportional stress field of a reference problem whose exact solution is available. In the previous proportional methods, the same crack length and the same element size were applied to both reference and unknown problems so that the same FEM error can be produced. Therefore, when analyzing many unknown problems, the conventional method needs to analyze many reference problems at the same time. Since this approach is time-consuming, this paper considers how to calculate many crack lengths efficiently by using only one single reference solution modeling. For this purpose, several general relations of SIFs are derived for the unknown and the reference problems when both crack length and element size are different. To analyze many unknown problems accurately by using a single reference solution modeling, how to choose the most suitable element dimension of the reference model is clarified. The proposed method is especially useful for crack propagation analysis.
- Subjects
CRACK propagation (Fracture mechanics); FINITE element method
- Publication
Archive of Applied Mechanics, 2024, Vol 94, Issue 4, p779
- ISSN
0939-1533
- Publication type
Article
- DOI
10.1007/s00419-024-02540-6