Numerical Study on the Delamination Onset in Drilling Composite Materials

Shi Yong Sun; Zi Bin Yan; Rui Yang

doi:10.4028/www.scientific.net/AMR.472-475.2256

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 472-475Numerical Study on the Delamination Onset in...

Numerical Study on the Delamination Onset in Drilling Composite Materials

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.