Additional Material Damping Form

Access the Additional Material Damping form as follows:

Click the Define menu > Materials command to display the Define Materials form. The Define Materials form also can be accessed by clicking the + (plus) symbol that may appear next to a drop-down list of available materials, such as the Material drop-down list on the Shell Section Data form, or the {Frame Section Type} Data forms.
Highlight a material definition in the Materials area of the form.
Click the Add New Material or Modify/Show Material button to display the Material Property Data form.
Click the Material Damping Properties button to display the Additional Material Damping form.

Use the options on the Additional Material Damping form to specify damping.

Modal Damping - Damping Ratio edit box. Enter a value for the damping ratio (0 <= r < 1) to be used during a Response Spectrum or Model Time-History analysis case.
Viscous Proportional Damping - Mass Coefficient and Stiffness Coefficient edit boxes. Enter values for these parameters that will be used during a Direct Integration Time History analysis case.
Hysteretic Proportional Damping - Mass Coefficient and Stiffness Coefficient edit boxes. Enter values for these parameters that will be used during a Steady State or Power Spectral Density analysis case.

After the additional material damping has been specified as part of the material property definition, the additional damping is applied to the model by assigning the material property definition to a selected area(s), frame(s), cable(s), tendon(s) or solid(s).

Return to SAP2000 Index

Your Ad Here