Continuum damage analysis of delamination in composite laminates using a stress-based layerwise plate model

被引:5
作者
Bouteiller, Paul [1 ]
Bleyer, Jeremy [1 ,2 ]
Sab, Karam [1 ]
机构
[1] Univ Gustave Eiffel, ENPC, Lab Navier, Descartes Cite,6-8 Blaise Pascal, F-77455 Champs Sur Marne, France
[2] Lab Navier, 6-8 Blaise Pascal,Cite Descartes, F-77455 Champs Sur Marne, France
关键词
Generalized continuum; Stress-based model; Multilayered plates; Delamination; Damage model; Variational approach; FINITE-ELEMENT; INTERLAMINAR FRACTURE; MULTILAYERED MATERIALS; INTERFACE MODELS; PROPAGATION; FORMULATION; PREDICTION; TOUGHNESS;
D O I
10.1016/j.ijsolstr.2022.111611
中图分类号
O3 [力学];
学科分类号
08 ; 0801 ;
摘要
This contribution addresses the modelling of delamination in a stress-based layerwise plate model. Such models benefit from a good representation of the local 3D stress field, especially inter-laminar stresses which are natural generalized stress unknowns arising in their derivation. We extend their construction to situations involving onset and propagation of interfacial delamination. We propose a variational formulation relying on a continuous damage description of the opening and sliding interfacial degradation processes using two damage variables. A mixed-mode delamination propagation criterion can be obtained through proper coupling between both variables. Finally, the model predictions are validated against classical delamination tests in pure and mixed modes.
引用
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页数:14
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