arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2001.03696math.APcs.NAmath.NA
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非局部界面问题的能量耦合方法

An energy-based coupling approach to nonlocal interface problems

Giacomo Capodaglio, Marta D'Elia, Pavel Bochev, Max Gunzburger

摘要:

非局部模型提供了从断裂力学到复杂地下流动的物理现象的精确表示,其中传统的偏微分方程无法捕获由微尺度和中尺度的长程力引起的影响。然而,非局部模型的应用,涉及接口,如多材料模拟和流体-结构相互作用的问题,是阻碍了缺乏一个严格的非局部界面理论所需的支持数值的发展。在本文中,我们使用基于能量的方法来开发一个数学上严格的非局部界面理论,它提供了一个物理上一致的扩展经典的完美界面PDE制定。数值例子验证了所提出的框架,并证明了我们的理论范围。

英文摘要:

Nonlocal models provide accurate representations of physical phenomena ranging from fracture mechanics to complex subsurface flows, where traditional partial differential equations fail to capture effects caused by long-range forces at the microscale and mesoscale. However, the application of nonlocal models to problems involving interfaces such as multimaterial simulations and fluid-structure interaction, is hampered by the lack of a rigorous nonlocal interface theory needed to support numerical developments. In this paper, we use an energy-based approach to develop a mathematically rigorous nonlocal interface theory which provides a physically consistent extension of the classical perfect interface PDE formulation. Numerical examples validate the proposed framework and demonstrate the scope of our theory.

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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