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A symmetrical shallow structure is made of eight equal truss members, which are embedded into hinge supports. The structure is loaded by the concentrated force and alternatively by the imposed nodal deformation over the critical limit point when the snap-through occurs. Imposed nodal deformation is used in RFEM 5 and RSTAB 8 to obtain full equilibrium path of the snap-through. The self-weight is neglected in this example. Determine the relationship between the actual loading force and the deflection considering large deformation analysis. Evaluate the load factor at given deflections.
Model Used in
Verification Example 000201 | 2
| Number of Nodes | 9 |
| Number of Lines | 8 |
| Number of Members | 8 |
| Number of Load Cases | 1 |
| Total Weight | 5.162 tons |
| Dimensions (Metric) | 25.548 x 25.548 x 1.164 m |
| Dimensions (Imperial) | 83.82 x 83.82 x 3.82 feet |
| Program Version | 5.16.00 |
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