Taper

词汇表条目

A taper is a member or a surface with a variable statical moments and warping statical moment of a cross-sections.

Application cases for variable cross-section shapes are the reinforcements in the area of frame joints, cantilevered members or slabs and towers with conical hollow sections.

Modelling in RFEM/RSTAB

A tapered member is modelled by defining different cross-sections for the member start and the member end. The cross-section type must be consistent, for example, I-shaped cross-sections at both member ends. To determine the member stiffness, the cross-section properties are interpolated using the member length. The interpolation can be adapted to the geometry of the taper: as a rule of linear distribution, the cross-section is only reduced or extended by the height. If the cross-section width is also changed, it is recommended to use the quadratic approach for the interpolation of the cross-section properties.

It is also possible to model surfaces as tapers by defining the surface thickness by three points as linearly variable. The definition points can be within the surface or even outside it as long as they rest in the plane of the surface.

Design

You can design tapered members in the add‑on modules, such as RF‑/STEEL or RF‑/STEEL EC3, if there is a uniform number of stress points.

Under the links below, you can find the application examples for designs of a tapered member in the add‑on modules.

关键词

taper variable cross-section moment of inertia

目录

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