Development and Evaluation of Crack Band Model Implemented Progressive Failure Analysis Method for Notched Composite Laminate

Abstract

Progressive failure analysis (PFA) is widely used to predict the failure behavior of composite materials. As a structure becomes more complex with discontinuities, prediction of failure becomes more difficult and mesh dependence must be taken into account. In this study, a PFA model was developed using the Hashin failure criterion and crack band model. The failure initiation was evaluated using the Hashin failure criterion. If failure initiation occurred, the damage variables at each failure mode (fiber tension and compression; matrix tension and compression) were calculated according to linear softening degradation and they were then used to derive the damaged stiffness matrix. This matrix reflected a degraded material, and PFA was continued until the damage variables became “1,” implying complete material failure. A series of processes were performed using the finite element method program ABAQUS with a user-defined material subroutine. To evaluate the proposed PFA model, experimental results of open-hole composite laminate tests were compared with the obtained numerical results. The strain behaviors were compared using a digital image correlation system. The obtained numerical results were in good agreement with the experimental ones.

Strain-Field Modifications in the Surroundings of Impact Damage of Carbon/Epoxy Laminate

“…After simulating the impact with material failure [28][29][30][31][32][33], the task was linearized, and the results were reformulated for the Abaqus/Standard solver. Linearization was performed using the procedure detailed in [34,35].…”

Analysis of process-induced damage in remote laser cut carbon fibre reinforced polymers

“…In [29] a new modelling approach for fracture toughness normalisation is introduced, which reduced mesh dependency. Zhang et al [30] simulated open hole tension and compression tests regarding shear non-linearity and fibre kinking, which showed good agreement to experimental results.…”

“…Open Hole Test. In testing and development of composites, the open hole test specimen is widely used [5,26,27,28,29,30,31]. It allows for the comparison of machining technologies and during failure a combination of different damage effects like delamination, matrix cracks and fibre breakage occurs.…”

Analysis of The Progressive Damage of A Notched AS4/PEEK Composite Laminate Subjected To Tensile Loading

“…However, several works have been carried out to analyse the damage of composite structures utilizing progressive failure analysis (PFA) methodologies based on damage mechanics and failure criteria [1,2,3,4,5,6,7]. Matzenmiller's approach coupled with Hashin's failure criteria is being employed today as a specific tool of the PFA [8].…”