Modelling of the damage process of interfaces inside the WC/Co composite microstructure: 2-D versus 3-D modelling technique

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• 作者：Debski Hubert^a ; Sadowski Tomasz^b ; ^{sadowski.t@gmail.com" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Finite element method ; WC/Co composite ; XFEM method ; 2-D vs 3-D modelling technique
• 刊名：Composite Structures
• 出版年：2017
• 出版时间：1 January 2017
• 年：2017
• 卷：159
• 期：Complete
• 页码：121-127
• 全文大小：3015 K

文摘

The paper relates to a numerical analysis of the damage process of interface inside the WC/Co composite microstructure under tensile load by the finite element method. The focus is on comparing two modelling techniques for the damage process of interface material: flat (2-D) modelling and three-dimensional (3-D) modelling of RVEs. The damage process of metallic interface inside the Co composite is described by XFEM (eXtended Finite Element Method), based on a cohesive traction-separation law. The applied numerical tool is the commercial ABAQUS® package, where the non-linear problem is solved by the Newton-Raphson method. The use of 3-D modelling to describe the failure of WC/Co composite metallic interface enabled investigation of the damage process, starting from the moment of damage initiation to the total loss of rigidity of interface elements in a vast area of the examined microstructure.