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arXiv 2203.07565math.NAcs.NA
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带跳跃的非局部界面问题的渐近相容耦合公式

An asymptotically compatible coupling formulation for nonlocal interface problems with jumps

Christian Glusa, Marta D'Elia, Giacomo Capodaglio, Max Gunzburger, Pavel B. Bochev

摘要:

我们引入了一个严格的数学公式的非局部界面问题的跳跃,并提出了一个渐近相容的有限元离散的弱形式的界面问题。在证明了弱形式的适定性后,我们证明了当适当地指定非局部数据时,非局部界面问题的解收敛到相应的局部对应物。在一个和两个维度的几个数值试验表明,我们的技术的适用性,其数值收敛到精确的非局部解,其收敛到当地的极限时,视野消失,其鲁棒性补丁测试。

英文摘要:

We introduce a mathematically rigorous formulation for a nonlocal interface problem with jumps and propose an asymptotically compatible finite element discretization for the weak form of the interface problem. After proving the well-posedness of the weak form, we demonstrate that solutions to the nonlocal interface problem converge to the corresponding local counterpart when the nonlocal data are appropriately prescribed. Several numerical tests in one and two dimensions show the applicability of our technique, its numerical convergence to exact nonlocal solutions, its convergence to the local limit when the horizons vanish, and its robustness with respect to the patch test.

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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