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首页> 外文期刊>Finite Elements in Analysis and Design >The transition from moderately thick shells to thick shells of general shape by using finite element analysis
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The transition from moderately thick shells to thick shells of general shape by using finite element analysis

机译：通过有限元分析，从中等厚度的壳到普通形状的加厚壳的过渡

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摘要

Two types of shell bending elements are presented for the analysis of both moderately thick and thick shells of general shape. The first is a 2-D curved trapezoidal finite element with eight nodes, and it is based on a formulation that includes thickness shear deformation and does not neglect z/R in comparison with unity. The second is a 3-D rectangular prism isoparametric finite element with 20 nodes based on 3-D elasticity theory. To demonstrate the accuracy of these finite elements, a number of examples ranging from moderately thick to thick shell applications are presented and discussed with respect to thickness-to-shell radius ratios. In each example, the transitions from moderately thick shells to thick shells are calculated and compared with each other.
机译：提出了两种类型的壳体弯曲元件，用于分析中等厚度和一般形状的厚壳体。第一个是具有八个节点的二维弯曲梯形有限元，它基于一个公式，该公式包括厚度剪切变形，并且与单位数相比不会忽略z / R。第二个是基于3-D弹性理论的具有20个节点的3-D矩形棱镜等参有限元。为了证明这些有限元的准确性，就厚度与壳半径之比，提出并讨论了从中等厚度到厚壳应用的许多示例。在每个示例中，计算从中厚壳到厚壳的过渡并将其相互比较。

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