Modeling Interlaminar Shear Crack-Jump Phenomenon in Fiber-Reinforced Polymer Composites
This paper discusses the simulation technique for the development of a validated finite element model to capture the stable shear crack-jump phenomenon in carbon fiber-reinforced polymer composite laminates. The interlaminar cracking process is characterized using a 16-ply unidirectional (16) end-notch flexure (ENF) specimens. Complementary FE models of the test setup are developed to capture the mechanics of the observed interlaminar crack-jump phenomenon. The cohesive interface response is represented by a damage model with bilinear traction-displacement softening law. Close comparison of measured and FE-predicted load-central deflection response of the beam specimen serves to validate the FE model for the stable shear crack-jump. FE simulation predicts an early onset of damage at the interlaminar crack front corresponding to 13.4 pct. of the maximum deflection at fracture. The mechanism of stable crack-jump is described by the characteristic evolution of the interface damage parameter, and quantified by the damage dissipation energy.
Denni Kurniawan and Fethma M. Nor
S.S.R. Koloor et al., "Modeling Interlaminar Shear Crack-Jump Phenomenon in Fiber-Reinforced Polymer Composites", Advanced Materials Research, Vol. 1125, pp. 74-78, 2015