The problem of the dynamic delamination fracture of composite laminates in the presence of large process zones where nonlinear mechanisms take place is examined within the framework of elastic structural analysis and nonlinear elastic fracture mechanics. A model based on Timoshenko beam theory is formulated to analyze mode I dynamic fracture and investigate the influence of cohesive or bridging mechanisms on crack growth. A close form solution of the problem is obtained for the case of steady state cracking. Transient dynamic fracture is treated numerically through a finite difference approximation
Structural theories in the analysis of dynamic fracture of composite laminates
MASSABO', ROBERTA;
2003-01-01
Abstract
The problem of the dynamic delamination fracture of composite laminates in the presence of large process zones where nonlinear mechanisms take place is examined within the framework of elastic structural analysis and nonlinear elastic fracture mechanics. A model based on Timoshenko beam theory is formulated to analyze mode I dynamic fracture and investigate the influence of cohesive or bridging mechanisms on crack growth. A close form solution of the problem is obtained for the case of steady state cracking. Transient dynamic fracture is treated numerically through a finite difference approximation
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