Analysis of Shock-Induced Damage in Fiber-Reinforced Composites
Under the conditions of high strain rates and large deformations, engineered composites can experience large mean- and shear-stress states. Accurate numerical simulations for the mechanical response of these anisotropic materials under these conditions must include the effects of nonlinear elasticity and inelastic phenomena such as plasticity and damage. Modeling composite materials involves the additional complexity of requiring constitutive models for the interfaces as well as the constituents. Interfacial debonding of the fiber and matrix materials and delamination between the layers of a laminate provide two important failure mechanisms within composite structures. Physically based material models are desirable for simulating the thermomechanical response of composites. Computational simulations are useful for reducing the number of candidate designs for laminated, fiber-reinforced composites and for interpreting the deformation mechanisms observed in both controlled experiments and integrated tests. Furthermore, the availability of good computational models can reduce the costs of validation experiments, which are necessary for the design of engineering structures.
KeywordsConstitutive Model Representative Volume Element Inelastic Strain Plastic Strain Rate Computational Element
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