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A new C-0 higher-order layerwise finite element formulation for the analysis of laminated and sandwich plates

机译：用于层压板和夹心板分析的新的C-0高阶分层有限元公式

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摘要

In this paper, a new layerwise plate formulation based on a C-0 higher-order finite element model is presented for static and free vibration analyses of laminated composite and sandwich plates. The proposed layerwise theory which is developed for a three layered composite plates, assumes higher-order displacement field for middle layer and first-order displacement field for top and bottom layers. Compatibility conditions are imposed at the layer interface to satisfy the interlaminar displacement continuity. An eight-noded isoparametric element is used to model the plate. The accuracy of the proposed formulation is assessed for linear static and free vibration analyses by comparing the authors' results with available 3D elasticity, finite element and analytical solutions. It has been shown here that the present finite element formulation is much simpler, straightforward and accurate for static and free vibration analyses of laminated composite and sandwich plates. (C) 2015 Elsevier Ltd. All rights reserved.
机译：在本文中，提出了一种基于C-0高阶有限元模型的新型分层板公式，用于层合复合板和夹心板的静振动和自由振动分析。提出的针对三层复合板的分层理论，假设中层的高阶位移场和顶层和底层的一阶位移场。为了满足层间位移连续性，在层界面施加了相容性条件。八节点等参元素用于建模板。通过将作者的结果与可用的3D弹性，有限元和分析解决方案进行比较，可以评估所提出配方的准确性，以进行线性静态和自由振动分析。此处已经表明，本发明的有限元公式对于层压复合材料和夹心板的静态和自由振动分析要简单，直接和准确得多。 （C）2015 Elsevier Ltd.保留所有权利。

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