Defining a new dynamic load case

Note : Prior to the definition of the first load case, at least one mass group combination must have been already defined. In addition, Dynamics must have been selected in the Functionality list of the Project setup dialogue.

A new dynamic load case can be defined in the Load case manager. A dynamic load case is defined like a static load case, but its properties are adjusted otherwise.

The procedure for the definition of a dynamic load case

1. Open the Load case manager.

2. Press button [New] to create a new load case.

3. Set Action type to Variable.

4. Set Load type to Dynamic.

5. Select required Specification.

6. Press button [Parameters] to specify required parameters for selected type of dynamic load case.

7. Close the Load case manager.

Each defined dynamic load case, similarly to a static variable load case, must be sorted into a group of variable loads. Identical rules for sorting into groups and for the generation of combinations are applied for both static and dynamic variable load cases.

IMPORTANT: If the Specification of the load case is set to General dynamics, the program generates a set of new load cases. These load cases are used to store the results of the calculation: internal forces, deformation, reactions. Even though these load cases contain these results, it is NOT POSSIBLE to EVALUATE STRESS in 1D members (neither standard stress nor stress in steel / concrete code checks). Moreover, if such a load case is included to a combination of load cases, the stress cannot be evaluated for these combinations neither (the stress in such combinations is set to zero).