Use this dialog to define new dynamic cases.
The following analysis types are available:
Below in the dialog are options representing 2 types of structure analysis:
If modal analysis of a structure is not defined, dynamic structure analyses (seismic spectral, spectral analysis and time history) are not available. For spectral analysis, seismic analysis and time history analysis, use the results obtained during modal analysis of the structure. The definition of parameters of this analysis has to be preceded by the definition of a modal analysis of a structure. You can define several cases of modal analyses of a structure, each defined by a different set of parameters (differing mass matrices, damping values, and others). Seismic spectral, spectral, time history analyses carry out for the parameter defined for modal analysis, which is located in the list of structure loads.
See also:
Theoretical basis of methods used during structure dynamic analysis
Seismic Analysis Parameters (Response Spectrum Method)
Parameters of Time History Analysis