Citation: | DU Jianhuan, AI Changfa, AN Shaoke, REN Dongya, QIU Yanjun. Analysis of Aggregate Interaction Based on Configuration Force Fracture Criterion[J]. Journal of Southwest Jiaotong University, 2023, 58(1): 167-174, 226. doi: 10.3969/j.issn.0258-2724.20210115 |
In order to study the influence of the initial crack configuration (such as the initial crack deflection angle and the space position) in asphalt concrete on the change of crack propagation path and growth mode, A crack model with different initial configurations was established by extended finite element XFEM with configuration force at crack tip as fracture criterion to simulate the crack propagation through single aggregate and asymmetric double aggregate. The influence of initial crack configuration on crack propagation was analyzed from the aspects of crack propagation path and crack tip’s configurational force. The results are summarized below: 1) Under single aggregate interference, the crack tip’s configurational force gradually increases with the increase of the angle (the angle between the line connecting the crack tip and the center of the aggregate and the
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