A semi-analytical method to predict net-tension failure of mechanically fastened joints in composite laminates

• DOI: 10.1016/j.compscitech.2012.12.009
• Publication Date: 2013-01-11T17:35:37Z
• Authors: G. Catalanotti; P.P. Camanho
• Keywords: B. Strength; A. Polymer-matrix composites (PMCs); 0203 mechanical engineering; /dk/atira/pure/subjectarea/asjc/2200; Ceramics and Composites; B. Fracture; /dk/atira/pure/subjectarea/asjc/2500/2503; 02 engineering and technology; Engineering(all)

Abstract A Finite Fracture Mechanics model is proposed to predict the net-tension strength of composite mechanically fastened joints. A modification of coupled stress–energy criteria is suggested to take properly into account the effect of the R-curve in determining the crack length corresponding to the unstable crack propagation. The proposed model works for quasi-isotropic laminates and it requires as input the longitudinal strength and the fracture toughness of the laminate. The predictions obtained show good agreement when compared with the experimental results.