Problem Description
In this example a suspended cable is subjected to uniform self-weight and concentrated loads. The geometry, properties and loading are as described in Section 4.6.2, Comparison Example 2, Figure 4.16 and Table 4.1 of Tibert, 1999 and are reproduced in the following figure. Two cable elements are used in this model, one for the cable segment between joints 1 and 2 and the other for the segment between joints 2 and 3. The displacement at point 2 is compared with results presented in Tibert, 1999.
In this model point 2 is set at an arbitrary Z coordinate. The self-weight load is applied first and the cable automatically assumes the correct shape as a result of this analysis. Next the 8 kip load is applied continuing from the state at the end of the self-weight analysis (and including the loads from the self-weight case). To obtain the desired displacement, a response combination that combines the results of the self-weight load case with the point load case using a -1 multiplier on the self-weight case.
Tested Features
- Uniform load applied to cable elements
- Temperature load applied to cable elements
- Joint displacement loading
- Nonlinear static analysis
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