Use the Calculation Model tool to specify how to reach a solution for the analysis of displacements, internal forces, and supporting objects of the model.
In order to perform the analysis, the program requires information on the elastic stiffness, the potential rigid connection of nodes, and the way loads are transferred.
The calculation of the elastic stiffness relies on the type of finite elements used, if any. Depending on the type of structure, four predefined types of finite elements can be used: Curtain wall, Deck slab (one way), Shell, and Slab—rigid diaphragm. These default calculation models cannot be modified, but it is possible to create a custom calculation model.
The rigid connection of nodes indicates whether displacements are stiffened. Two types of stiffening diaphragms can be used: Full stiffening, i.e. a rigid body connection, or a partial stiffening on the XY plane.
The transfer of loads is calculated either with finite elements, or using the trapezoidal and triangular method.