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Static and dynamic FE analysis of piezoelectric integrated thin-walled composite structures with large rotations

机译：大旋转压电集成薄壁复合结构的静态和动态有限元分析

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摘要

A geometrically nonlinear finite element (FE) model based on large rotation shell theory is developed for static and dynamic analysis of piezoelectric integrated thin-walled structures with cross-ply or angle-ply laminates. The implemented large rotation theory has six kinematic parameters expressed by five nodal degrees of freedom (DOFs) based on first-order shear deformation (FOSD) hypothesis. An eight-node shell element with five mechanical DOFs and one electrical DOF is employed. Due to the assumption of small strains and weak electric potential, linear constitutive equations and constant electric field through the thickness are considered. The large rotation piezoelectric coupled FE model is validated by one static benchmark problem and afterwards applied to the static and dynamic analysis of piezoelectric integrated smart plates and shells composed of cross-ply or angle-ply laminates.
机译：建立了基于大旋转壳理论的几何非线性有限元（FE）模型，以对带有交叉层或角层层板的压电集成薄壁结构进行静态和动态分析。实施的大旋转理论具有六个运动学参数，这些参数基于一阶剪切变形（FOSD）假设由五个节点自由度（DOF）表示。使用具有五个机械自由度和一个电子自由度的八节点壳单元。由于假定的应变较小且电势较弱，因此考虑了线性本构方程和贯穿厚度的恒定电场。通过一个静态基准问题验证了大旋转压电耦合有限元模型，然后将其应用于由交叉层或角层层板组成的压电集成智能板和壳体的静态和动态分析。

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