Stress singularity evaluation for three-dimensional cracks using characteristic tensor method
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- SAITO Kei
- JSOL Corporation
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- HIRASHIMA Tei
- JSOL Corporation
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- MA Ninshu
- Joining and Welding Research Institute, Osaka University
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- MURAKAWA Hidekazu
- Joining and Welding Research Institute, Osaka University
Bibliographic Information
- Other Title
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- 特性テンソル法を用いた三次元き裂先端特異応力場の評価
Abstract
<p>The Characteristic tensor method (CTM) is a new method to evaluate the singular stress field with a characteristic tensor (CT) which is calculated by averaging the stress in an infinitesimal volume at a crack tip. The CT has a linear relation with the stress intensity factor (SIF), which characterizes the singular stress field around a crack tip in an isotropic homogeneous elastic body. Even under mixed-mode loading conditions, the SIFs of each mode can be easily and efficiently estimated using CT. For the practical use in industries, the evaluation of the CTM for a three-dimensional crack under general three-dimensional stress state is necessary. In this study, the reliability and accuracy of CTM is investigated by estimating SIFs in several representative types of three-dimensional cracks where stress states are calculated by the finite element method. The results show that the SIFs estimated by the CTM have high accuracy even for mixed-mode conditions. It was, thus, demonstrated that CTM provides a practical and reliable approach for the efficient estimation of SIFs of three-dimensional cracks.</p>
Journal
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- The Proceedings of The Computational Mechanics Conference
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The Proceedings of The Computational Mechanics Conference 2021.34 (0), 121-, 2021
The Japan Society of Mechanical Engineers
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Keywords
Details 詳細情報について
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- CRID
- 1390010292749405568
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- ISSN
- 24242799
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
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- Abstract License Flag
- Disallowed