There is no explicit formulation of inverse mapping about the isoparametric element, so inverse mapping is avoided in finite element analysis.
由于等参元不存在逆变换的显式，所以在有限元分析的列式中都回避等参元逆变换。
The displacement boundary values of the small model use the results of the large model, which are obtained by interpolating with numerical inverse isoparametric mapping.
二次细分网格位移边界值采用等参逆变换法由一次网格的计算结果插值得到。
Geometric dichotomy method is innovated and used for inverse isoparametric mapping in linear finite element, of which a property is proved and served as the foundation.
在证明线性等参单元的一个几何特性的基础上，提出了线性等参单元逆变换的几何二分法。
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