Author(s)

H. Wang, S. Ding, F.-G. Buchholz, R. Rikards

Abstract

Delamination analysis for 2D- and SB-models of a cross-ply laminated three-point bending specimen H. Wang, S. Ding,* F.-G. Buchholz, R. Rikards* Institute of Applied Mechanics, Paderborn University, Pohlweg 47-49, D-33098 Paderborn, Germany ABSTRACT An investigation was performed to study the delamination growth in two different cross-ply laminated three-point bending specimens. A two dimensional (2D) finite element (FE) analysis was firstly carried out to determine the strain energy release rates during the delamination of the beams. Contact elements were used to prevent the material interpenetration on the crack surfaces. To study three dimensional (3D) effects on the crack growth in the composite beams, 3D FE analysis was developed. The 3D results showed that the distribution of the energy release rates along the delamination front are not constant. At the free surface a coupling between mode II and mode III energy release rates was also observed, and it was further

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