Cable on Pulleys
Tips & Tricks
In RFEM, you have the option to create and analyze cables using sheaves. For this, use the ‘Cable on Pulleys’ member type. It is ideal for pulley systems, where the longitudinal forces are transferred via sheaves.
In contrast to a normal cable member, the displacement is possible only in the internal nodes in longitudinal direction ux. Therefore, the member may not be subjected to member loads that act in the local y- or z‑direction. At the internal nodes of the polyline, it is not important whether there is a nodal support or the member is connected to another construction, because the global system of the cable member is always analysed over the length of the polyline.
Figure shows a simple example for this member type. This is a simple pulley block with a loose sheave.
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