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arXiv 2302.01510cond-mat.mtrl-sci
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准静态脆性断裂相场模型的AsFem实现

An AsFem implementation for quasi-static brittle fracture phase field model

Yuanfeng Yu, Xiaoya Zheng

摘要:

相场法因其在模拟断裂问题方面的优异性能而得到了广泛的应用。目前实现过程主要基于商业软件,操作流程相对复杂。在本文中,2D和3D相场模型中实现的开源有限元软件包AsFem。与商用软件相比,在AsFem中实现相场断裂模型更为简单。同时,对于位移场和相位场子问题,可以采用稳健的交错格式和高效的整体格式进行求解,且转换过程非常简单。几个例子进行测试,以证明当前实现的性能。仿真结果与前人的工作吻合较好,表明了在AsFem中实现相场法的可行性和有效性。在未来,更复杂的多场耦合相场断裂问题可以解决与AsFEM。

英文摘要:

Phase field method has been widely used because of its excellent ability to simulate fracture problems. At present, the implementation process is mainly based on commercial software, and the operation process is relatively complex. In this paper, 2D and 3D phase field models are implemented in the open-source finite element software package AsFem. Compared with commercial software, it is simpler to realize phase field fracture model in AsFem. At the same time, a robust staggered scheme and an efficient monolithic scheme can be used to solve the displacement field and phase field sub-problem, and the transformation process is very easy. Several examples are tested to demonstrate the performance of the current implementation. The simulation results are in good agreement with the previous work, which shows the feasibility and effectiveness of implementing the phase field method in AsFem. In the future, more complex multi-field coupled phase field fracture problems can be solved with AsFem.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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