Evolution of ply cracks in multidirectional composite laminates
作者： Chandra Veer Singh , Ramesh Talreja
DOI: 10.1016/J.IJSOLSTR.2010.01.016
关键词: Composite laminates 、 Energy parameter 、 Parametric statistics 、 Finite element method 、 Materials science 、 Damage mechanics 、 Ultimate tensile strength 、 Longitudinal direction 、 Structural engineering 、 Composite material 、 Computational simulation
摘要: Abstract This paper treats evolution of ply cracks in multidirectional composite laminates subjected to a quasi-static tensile load the longitudinal direction. Starting with pre-existing off-axis plies, formation additional is analyzed by an energy-based approach. A critical laminate energy parameter associated these defined and evaluated using experimental data for reference cross-ply laminate. The modeling approach requires crack surface displacements, which are calculated three-dimensional finite element (3-D FE) analysis performed on suitable representative volume given cracked model predictions agree well [ 0 / ± θ 4 1 2 ] s 90 ∓ 45 laminates. parametric study conducted evaluate effects thickness stacking sequence damage m n p
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