Boundary Element Analysis of ENF Specimen of CFRP.

ENF specimen of CFRP laminates is analyzed by the Boundary Element Method. For the anisotropic analysis, the fundamental solution by Cruse is used. The contact problem is analyzed using the Penalty method proposed by Yagawa et al. The contact force distribution, area of the contact zone and the crack opening profiles are obtained by analysing several specimens with different clack lengths. It is shown that the contact zone size keeps nearly constant value for different crack lengths. The effect of the friction coefficient is also evaluated and discussed.