Application of viscoelastic fracture criteria to progressive crack propagation in polymer matrix composites
作者： D. Gamby , J. Chaoufi
关键词: Fissure 、 Viscoelasticity 、 Dissipation 、 Elasticity (economics) 、 Numerical analysis 、 Composite material 、 Materials science 、 Polymer 、 Fracture mechanics
摘要: With the view of comparing local and global viscoelastic fracture criteria, an extension Christensen's criterion to composite materials with stiff elastic fibers is proposed. Several versions this are compared Schapery's approach same phenomenon. The asymptotic version for rapid crack propagation found suitable material investigated, at room temperature. Dissipation in specimen has two main sources: undamaged on one hand, damaged inside `failure zone' close tip other. respective roles these kinds dissipation assessed.
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