Eccentricity

词汇表条目

The eccentricity describes an imaginary distance from the centre of gravity of a surface or a member to a real point in space.

There is a difference between the following eccentricities:

Member Eccentricity

In RFEM and RSTAB, a member length corresponds to the distance between two nodes, which is defined by the line of a member. In the case of cross-section connections or downstand beams, the reality is only modelled approximately. By using member eccentricities, it is possible to connect members eccentrically by specific member end sections. For example, you can thus reduce design moments at beams for the frames with large column sections. The member eccentricities are taken into account by a transformation of the degrees of freedom in the local element stiffness matrix.

Surface Eccentricity

A plane in the neutral axis of a surface represents the reference surface of thickness. It is applied in equal proportions on both sides of this 'central plane'. By specifying the eccentricity e<sub>z</sub>, it is possible to arrange an offset of height for the surface. In this way, you can achieve the adjacent surfaces with different thickness to have a uniform top or bottom edge.

关键词

eccentric eccentricity

链接

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。

首个许可价格
3,540.00 USD
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。

首个许可价格
2,550.00 USD