Adaptive method for phase-field fracture using a volume weighted Quickselect algorithm

被引：0
作者：
Kai Xie
Ruijie Zhang
Zhongxin Li
Zhilin Wu
机构：
[1] Nanjing University of Science and Technology,School of Mechanical Engineering
来源：
International Journal of Fracture | 2023年 / 242卷
关键词：
Adaptive mesh refinement; Phase-field fracture; Finite element method; Quickselect algorithm;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The phase-field fracture method (PFM) requires an extremely fine mesh to accurately capture the crack topology, which is computationally expensive. In this work, a new adaptive mesh refinement method is proposed for phase-field fracture. Based on the phase field increment, a volume weighted Quickselect algorithm is used to determine the coarsen region and the refined region. The speed of the crack propagation is predicted to control the size of the refined region, which reduces unnecessary degrees of freedom. Several benchmark numerical examples are simulated and the results demonstrate the efficiency and accuracy of the proposed method. In the numerical examples, the computational time using this method is reduced by about 90% compared with the standard PFM.
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页码：247 / 263
页数：16
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