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Indexed by:会议论文

Date of Publication:2012-03-27

Included Journals:EI、CPCI-S、Scopus

Volume:472-475

Page Number:2256-2259

Key Words:Composite; Delamination; Critical drilling force; Cohesive zone model

Abstract:The theoretical analysis and numerical study focused on the delamination onset of composites in drilling are presented. An analytical model considering the form of loads distribution is built. The formulas based on the fracture mechanics theory are given for predicting the critical drilling force of delamination onset. A finite element model is used to simulate the process of interfacial crack growth between layers. The interface elements are employed to account for delamination based on cohesive zone model. Some numerical results are given for verifying the validity of the distribution loading model and discussing the delamination onset and growth in drilling composites.