A fatigue degradation law for cohesive interface elements – Development and application to composite materials
作者： Paul W. Harper , Stephen R. Hallett
DOI: 10.1016/J.IJFATIGUE.2010.04.006
关键词:
摘要: A cohesive zone interface element degradation law is presented for analyzing delamination crack propagation under cyclic loading. Development of the based on a detailed study numerical and extraction strain energy release rate from this zone, enabling direct link with experimental Paris Law data. The implemented using three-dimensional elements within explicit finite code LS-Dyna. Validation by way application to composite material fatigue fracture toughness tests; Double Cantilever Beam Mode I, End Notch Flexure mode II Mixed Bending mixed case. In all cases good agreement data available in open literature and/or theoretical solutions was obtained.
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