Failure Analysis of Laminated Composite Pretwisted Rotating Plates
Failure Analysis of Laminated Composite Pretwisted Rotating Plates
复制标题
叠层复合材料预扭旋转板的失效分析
DOI：
10.1106/obeg-9cxc-0f26-q368
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发表时间：
2001
期刊：
影响因子：
--
通讯作者：
P. Sinha
中科院分区：
文献类型：
--
作者：
A. Karmakar;P. Sinha
本文提出了一种确定中心点横向载荷作用下预扭旋转板第一层破坏强度的有限元计算方法。有限元模型基于张量多项式破坏准则，其中包含最大应力、最大应变、Tsai-Hill、Tsai-Wu和霍夫曼破坏准则作为特例。一个九节点的三维退化复合材料壳单元的开发和用于本有限元列式。考虑了横向剪切变形和转动惯量的影响。采用拉格朗日运动方程推导了考虑中等转速时的动力平衡方程，在中等转速下科里奥利效应可忽略不计。最后，在去掉时间相关项后，建立了静力平衡方程。对具有非线性预扭转的悬臂旋转板进行了破坏载荷计算，研究了扭转角、旋转速度和层合板构型对破坏载荷的影响。
In this paper a finite element computational procedure is presented for the determination of first-ply failure strengths of pretwisted rotating plates subjected to centre point transverse load. The finite element model is based on the tensor polynomial failure criterion that contains the maximum stress, maximum strain, Tsai-Hill, Tsai-Wu and Hoffman failure criteria as special cases. A nine-noded three-dimensional degenerated composite shell element is developed and used for the present finite element formulation. Effects of transverse shear deformation and rotary inertia are included. Lagrange's equation of motion is employed to derive the dynamic equilibrium equation considering moderate rotational speeds for which the Coriolis effect is negligible. Finally, the static equilibrium equation is formulated after discarding the time-dependent terms. Failure load computations for rotating cantilever plates with nonlinear pretwist are carried out to investigate the effects of angle of twist, rotational speed and laminate configuration.