Influence of non-bonded interphase on crack driving force in carbon nanotube reinforced polymer

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• 作者：Roham Rafiee^a ; ^{Roham.Rafiee@ut.ac.ir} ; Abdolhossein Fereidoon^b ; Meghdad Heidarhaei^c
• 关键词：Carbon nanotube ; Finite element model ; van der Waals interactions ; Crack
• 刊名：Computational Materials Science
• 出版年：2012
• 期刊代码：31_09270256
• 类别：et
• 出版时间：April, 2012
• 卷：56
• 期：Complete
• 页码：25-28
• 文件大小：544 K

摘要

The influence of carbon nanotubes (CNTs) on the fracture behaviour of composites is studied. A 3-D finite element model consisting of CNT, interphase and surrounding polymer is constructed. CNT is modeled as a lattice structure using beam elements and the interphase region is simulated using non-bonded interactions. A semi-circular crack is considered in matrix and boundary conditions are adapted reflecting fracture mode I. The J-integral is obtained for both neat resin and CNT reinforced polymer. The results demonstrate importance of considering CNT as a lattice structure and taking into account interphase region.