Complex number method for plane stress analysis and plane strain analysis is proposed by means of introducing the concepts of stress complex number and strain complex number in this paper.

通过引入应力复数和应变复数的概念，提出了平面应力分析和平面应变分析的复数方法。

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The strength analysis of a drop-shaped tube is resolved into the following problem: axial compression together with a plane state of strain with uniform internal pressure.

把滴形管的强度分析问题分解为：沿管轴线方向的压力问题与管沿周线方向均布压力的平面应变问题的叠加。

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Five of these anchor slab structures were analyzed by finite element method in plane strain case, and the results of analysis are fairly close to the data obtained from field observations.

本文用有限单元法按平面形变情况分析了五座锚定板挡土结构，发现分析结果与现场实测数据相当接近。

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