analysis Command

This command is used to construct the Analysis object, which defines what type of analysis is to be performed. The following analysis types are available:

• Static Analysis -- solves the KU=R problem, without the mass or damping matrices.
• Transient Analysis -- solves the time-dependent analysis. The time step in this type of analysis is constant. The time step in the output is also constant.
• Variable Transient Analysis -- performs the same analysis type as the Transient Analysis object. The time step, however, is variable. This method is used when there are convergence problems with the Transient Analysis object at a peak or when the time step is too small. The time step in the output is also variable.

All currently-available analysis objects employ incremental solution strategies.