由于其结构和所受载荷比较复杂，因此本文采用了精度较高的8节点四边形等参数环形单元对模型进行了有效求解。
In this paper, the 8-node quadrangle equal-parameter ring cell whose precision is relatively high, is used to solve the problem effectively, since the its structure and load are comparatively complex.
某些作者给出的数值结果表明，在单元形状不规则时，八节点和十二节点的四边形等参数单元的刚度变硬。
Several Authors have presented numerical results which demonstrated the stiffening of 8-node and 12-node quadrilateral isoparametric elements when distorted from a rectangular shape.
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