What is the meaning of the unit [mrad] for a rotation?
回答
In RSTAB, our standard rotation angle unit is "rad."
The results of the node deformations in Table 4.6 is displayed in "mrad," that is, milliradian.
The following general formulas are taken for the conversion of angular dimensions, using rad as unit for the arc length dimension:
From arc length dimension to degree: alpha = (180° / pi) * x
From degree to arc length dimension: x = (pi / 180°) * alpha
For the direct conversion of the unit "mrad" of the arc length dimension used in RSTAB:
From arc length dimension to degree: alpha = (180° / (pi * 1000)) * x
Please note that the values are in "mrad."
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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。
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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。
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