Abstract
AbstractThis study followed numerous simulations of the stress field distribution in damaged composite cross-ply laminates, which were subjected to uni-axial loading. These results led us to elaborate an energy criterion. The related criterion, a linear fracture-based approach, was used to predict and describe the initiation of the different damage mechanisms. Transverse crack damage was generally the first observed damage. The second type of damage was longitudinal cracking and/or delamination. The stress field distribution in the damaged cross-ply laminates was analysed through an approach that used several hypotheses to simplify the damage state. The initiation of transverse cracking and delamination mechanisms was predicted. The proposed results concern the evolution of the strain energy release rate associated to the evolution of transverse cracking and delamination. As in several studies in the literature, to quantify the evolution of the damage mechanisms in the present approach, the laminate is su...
Highlights
Composite materials are increasingly used in many structural components such as aerospace, aeronautics, automobile and sport, thanks to their height strength-to-weight ratio
We propose the development of an analytical model with numerical simulation
The strain energy release rate is plotted against transverse crack density and delaminated length for the carbon epoxy composite laminates [02, 902]s
Summary
Composite materials are increasingly used in many structural components such as aerospace, aeronautics, automobile and sport, thanks to their height strength-to-weight ratio It is, necessary to predict whether these structures will be able to resist under all applied stresses. Studies concern the spread of waves in fluids (in repose or in flow) and in the solid (porous, granular or composite materials, vibrating structures) as well as on the mechanisms of coupling. Their objective is to understand physical phenomena by favouring the development of analytical models and of experimental studies linked to necessary numerical simulation. Researchers operate in one of three teams specialized on complementary themes: Materials; Transducers; and Vibrations, Guided Acoustics and Flow
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