Beam local nonlinearity
Definition, application
Beam local nonlinearity is nonlinear functionality which can be apply on 1D member in model. These features can simulate special nonlinear behaviour of 1D member. For taken into account it is necessary to perform nonlinear analysis.
Where to find it
In project data dialog in part 'Functionality' it is necessary to switch ON 'Beam local nonlinearity'. After that in standard tree in group 'Structure/Model data' there is possibility 'Beam - nonlinearity'.
How to create new one
In 'Beam - nonlinearity' dialog there are five possibilities which can be set on 1D member. For information there is a graph of nonlinear behaviour and some tooltip. After applying on 1D member - special symbol will appear on it.
Possibilities
| Beam - nonlinearity | Description |
| "Press only" |
1D members not able to bear any tension |
| "Tension only" |
1D members not able to bear any compression |
| " Limit force" |
1D member is capable of bearing tension (or compression) stress up to a certain limit |
| " Gap" |
1D member is not attached rigidly to the structure but "starts its action" only after some initial change of its length |
| "Initial stress (from member nonlinearity data)" |
It is possible to define initial pre-stressing forces in individual 1D members |