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Estimation of Stress Intensity Factor by Using a New Fast Multipole Dual-Boundary Element Method
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Estimation of Stress Intensity Factor by Using a New Fast Multipole Dual-Boundary Element Method
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Journal Article
Estimation of Stress Intensity Factor by Using a New Fast Multipole Dual-Boundary Element Method
2025
Overview
Cracks and defects are inevitable during the long-term use of structures. This study focuses on determining the stress intensity factors of multi-cracked structures by using a new fast multipole dual boundary element method. Numerical examples show that the results of the present method agree well with analytic solutions. When the crack distribution changes, the most unfavorable conditions also change. The shape of the defect has an effect on the stress intensity factors of nearby cracks. Among triangular, rectangular, hexagonal, and circular defects, when the area of the defect is identical, the triangular pore is more likely to induce crack propagation, while the circular pore is more secure. The above results can be used as a reference for structural design and optimization.
Publisher
MDPI AG
