Abstract The subject paper purportedly proposes a novel enriched finite element method for modeling problems with strong discontinuities such as those encountered in fracture mechanics. The purpose of this document is to demonstrate that the method in the subject paper (Non-nodal eXtended Finite Element Method, NXFEM) is conceptually identical to the Discontinuity-Enriched Finite Element Method (DE-FEM) [Int. J. Numer. Meth. Eng. 2017; 112:1589–1613] proposed by Aragon and Simone.

中文翻译：

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讨论“用于非节点富集动态断裂模拟的线性完全扩展有限元方法”[有限元素。肛门。德。152 (2018)] 由 I. Asareh, T.-Y. 金和 J.-H. 歌曲

摘要 该主题论文据称提出了一种新颖的丰富的有限元方法，用于建模具有强不连续性的问题，例如断裂力学中遇到的问题。本文档的目的是证明主题论文中的方法（非节点扩展有限元方法，NXFEM）在概念上与不连续性增强有限元方法 (DE-FEM) [Int. J. 数字。冰毒。英。2017; 112:1589–1613] 由 Aragon 和 Simone 提出。