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2.1 Type of Model
The Type of Model that we define when creating a new model has a crucial influence on how the structural components will be stressed.
When the model type 2D - XY (u Z/ϕX/ϕY) is selected, the plate will be subjected to bending only. The internal forces to be designed will be exclusively represented by moments whose vectors lie in the plane of the structural component.
When the model types 2D - XZ (uX /u Z /ϕY) or 2D - XY (u X /u Y /ϕ Z ) are selected, the wall or diaphragm will only be subjected to compression or tension. The internal forces used for the design will be represented exclusively by axial forces whose vectors lie in the plane of the structural component.
In a spatial 3D model type, both loadings (moments and axial forces) are combined. A structural component defined in this way can be subjected to tension/compression and bending simultaneously. Thus, the internal forces to be designed are represented by axial forces as well as moments whose vectors lie in the component's plane.