An enriched finite element model for wave propagation in fractured media

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• 作者：M. Komijani ; R. Gracie ; ^{rgracie@uwaterloo.ca}
• 关键词：Generalized finite element ; Wave propagation ; Phantom Node Method ; Mass lumping
• 刊名：Finite Elements in Analysis and Design
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：125
• 期：Complete
• 页码：14-23
• 全文大小：2876 K
• 卷排序：125

文摘

New enriched FEM that accurately simulates wave propagation in fractured media. Combines the Phantom Node Method to model fractures and the Generalized FEM. Eliminates spurious oscillations that appear in FEM models of fractured media. Critical time step size is the same order of magnitude of that of the underlying FEM. A specific kinetic energy-consistent lumped mass matrix is proposed.