Failure of Nodal Supports
Tips & Tricks
If nodal supports should have an effect in certain directions only, you can define failure. Here is an example of a single‑span beam, whose right support can only absorb positive vertical loads. The load comprises vertical suction load and horizontal load.
However, there are two options for the failure:
- Failure if negative PZ'
- Failure all if negative PZ'
- The difference is illustrated in the graphic.
If there are additional horizontal forces after the vertical failure of the support with Option 1, the support with Option 2 fails completely. Therefore, it is necessary to select the proper nonlinearity according to the circumstances.
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