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Application of a delamination model to laminated composite structures

机译:分层模型在层状复合结构中的应用

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摘要

A model for progressive interlaminar delamination is presented for laminated composite structures. Instead of a cumbersome 3D description, a computationally efficient 2D technique is adopted which models the laminated structure as an assembly of subla- minates connected through their interfaces. Constraints between sublaminates are removed to represent the presence of delamin- ations. The use of laminate theory results in jumps in stress resultants across the delamination tip and this helps to avoid dealing with the singular stress field at the delamination front.
机译:提出了用于层状复合结构的层间分层的模型。代替繁琐的3D描述,采用了计算效率高的2D技术,该技术将层压结构建模为通过其界面连接的层压板的组合。去除亚层板之间的约束,以表示存在分层。层压理论的使用会导致整个分层尖端的应力合力跃变,这有助于避免处理分层前沿的奇异应力场。

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