FAQ 000076 ZH

显示设置 RFEM RSTAB

I superimpose two of the load cases into one result combination by using the 'Or' criterion. The results graphic of the result combination, however, shows deformations smaller than the two contained load cases.

Furthermore, I get a positive as well as a negative maximum value for the RC, despite the fact that the individual load cases yield positive deformation values.

回答

In the result combination, RSTAB superimposes the (orthogonal) components u-x, u-y und u-z of the individual load cases and creates the total deformation u. According to the definition of the coordinate system, the orthogonal components of the load cases can be positive or negative. Therefore, it is only a display issue, because the deformations u shown in the graphic are not definitively specified in terms of their direction.

The determination of the RC extreme values yields two values: maximum and minimum. The geometric addition of the minimum and maximum value yields the correct deformation value of the result combination. The results table shows he correct value.

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RFEM 主程序 RFEM
RFEM 5.xx

主程序

结构设计与有限元­分析软件(FEA)可以用于建立平面与空间结构模型,适用于由杆件、面、板、墙、折板、膜、壳、实体以及接触单元等的建模与分析计算。

RSTAB 主程序
RSTAB 8.xx

主程序

空间结构设计与分析软件,主要用于框架、梁与桁架等空间结构的建模与计算。可以输出内力、变形与制作反力的线性与非线性的计算结果。