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Axis definition of line hinge

Figure 01 - Axis definition of line hinge
Alignment of line hinges

Figure 02 - Alignment of line hinges

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20 August 2019

002815

Markus Baumgärtel

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RFEM

Structural Analysis

According to which coordinate system, are linear hinges aligned?

Answer

Axial/Shear Release or Spring

The degrees of freedom are based on the following definition of the axis: The axis x points in the direction of the line;


These text boxes or table columns control the degrees of freedom for axial and shear forces. If a check box is selected, it means that the displacement in this direction is possible and thus the force is not transferred.

It is also possible to enter the constant of a translational spring.

Moment Release or Spring

The degrees of freedom for the moments refer to the local axis system of the hinge (axis x in the direction of the line, axis y as tangent, and axis z as normal to the surface plane).
A check mark indicates that the rotation is free and the internal force is not transferred.
It is also possible to enter the constant of a rotational spring.

There is already an interesting article about line hinges available on our website .

Keywords

Line hinge Axis of line hinge Coordinate system of line hinge

Reference

[1]   Manual RFEM. (2018). Tiefenbach: Dlubal Software.

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RFEM 5.xx

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Structural engineering software for finite element analysis (FEA) of planar and spatial structural systems consisting of plates, walls, shells, members (beams), solids and contact elements

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