Response Spectrum Analysis Study
Response spectrum analysis is used for computing an approximation of the structural response to transient, nondeterministic events, such as earthquakes or shocks.
The Response Spectrum Analysis study is mainly an entry point when adding studies. What you actually get when you add such study is an Eigenfrequency study step together with a Response Spectrum node under Definitions.
The actual response is computed on demand during result evaluation, using the computed eigenfrequencies and modes. The settings for the evaluation are done in the Response Spectrum 2D and Response Spectrum 3D data sets.
If your response spectrum evaluation requires inclusion of missing mass correction, you need also to compute a set of stationary load cases. To set up that analysis, use the Missing mass correction study: Create button in the Response Spectrum node settings.
•
See Performing a Response Spectrum Analysis for a detailed description of how to work with response spectrum evaluations.
•
The theory is described in Response Spectrum Analysis Theory.
•
The settings for the special data sets are described in Response Spectrum 2D and Response Spectrum 3D in the COMSOL Multiphysics Reference Guide.
•
The Response Spectrum node is described in the COMSOL Multiphysics Reference Guide.
•
Earthquake Analysis of a Building: Application Library path Structural_Mechanics_Module/Dynamics_and_Vibration/building_response_spectrum
•
Shock Response of a Motherboard: Application Library path Structural_Mechanics_Module/Dynamics_and_Vibration/motherboard_shock_response