Variational phase-field fracture with controlled nucleation
Variational phase-field fracture with controlled nucleation
复制标题
受控成核的变分相场断裂
DOI：
10.1016/j.mechrescom.2023.104059
复制
发表时间：
2023
影响因子：
2.4
通讯作者：
Larsen, Christopher J.
中科院分区：
文献类型：
--
作者：
Larsen, Christopher J.
我们简要回顾了相场断裂到Griffith断裂的Γ-收敛，并描述了在实施相场模型时如何发生软化和成核。给出了一个例子，这种软化和成核可以完全停止，同时保持裂纹扩展和Γ-收敛。然后，我们展示了如何成核可以局部打开，基于任何标准，如应力阈值。同样，这些修改保持了Γ-收敛，并且它们可以应用于静态，准静态和动态模型。此外，我们描述了为什么这些修改可以预期提高相场模型的收敛性。
We briefly review the Γ-convergence of phase-field fracture to Griffith fracture, and describe how softening and nucleation occur when implementing phase-field models. An example is given of how this softening and nucleation can be completely stopped, while preserving crack growth and Γ-convergence. We then show how nucleation can locally be turned back on, based on any criterion, such as a stress threshold. Again, these modifications preserve Γ-convergence, and they can be applied to static, quasi-static, and dynamic models. Additionally, we describe why these modifications can be expected to improve the convergence of phase-field models.
影响因子：
5.3
作者：
Aditya Kumar;B. Bourdin;G. Francfort;O. Lopez-Pamies
通讯作者：
Aditya Kumar;B. Bourdin;G. Francfort;O. Lopez-Pamies