Affiliation:
1. Zhejiang University Hangzhou Zhejiang China
2. Center for Balance Architecture Zhejiang University Hangzhou Zhejiang China
3. Architectural Design and Research Institute of Zhejiang University Hangzhou Zhejiang China
4. College of Engineering and Technology China University of Geosciences (Beijing) Beijing China
Abstract
AbstractThe mechanical behavior of the cracked rock mass is controlled by the crack initiation and propagation under compression and shear. The key to predicting the wing crack initiation angle is to correctly describe the distribution of the stress field at the crack tip. First, the previous studies are reviewed, and their inadequacies are discussed in detail. Next, according to the experimental results, three kinds of crack parameters (i.e., geometry, strength, and deformation) are introduced, and a stress transfer model on the crack face under compression and shear considering crack parameters is proposed. Then, the relevant formulae of stress intensity factors (KI and KII) and non‐singular term (T‐stress) at the crack tip are obtained. Finally, the proposed model is verified by other researchers' test results, and the effects of three kinds of crack parameters and the rock property on the distribution of tangential stress at the crack tip are discussed.
Funder
National Key Research and Development Program of China
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science
Cited by
6 articles.
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