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The effect of damage patterning on elastic moduli and damage evolution in ideal brittle cracked solids is examined. Key limitations associated with typical continuum damage mechanics approaches are addressed. Critical shortcomings arising from the use of spatially-averaged damage descriptors in...
When subjected to fatigue loading, the off-axis plies of some polymer matrix laminates undergo a transverse cracking whose density is maximum close to the free edges and decreases toward the specimen center; moreover, this damage distribution evolves as the number of cycles increases. The...
Talreja and coworkers have reported brittle and tough polymer matrix composites to show different cross-ply laminate stiffness reductions due to transverse cracks, despite very similar elastic properties. Studies of crack opening displacement (COD) in 0,,,90, laminates may help in solution of...
A computational finite element model is developed herein for the purpose of predicting the evolution of delaminations in a laminated continuous fiber polymer matrix composite subjected to monotonically increasing loading. Because the temperature of interest is near the glass transition...
In this paper, a constitutive model for characterization of mechanical response in inelastic composite materials due to damage developed recently by the authors is first outlined. The formulation is based on the concept of damage surface and on the assumption that the change of material behavior...
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