Damping Coefficients |
 
|
Damping Coefficients |
|
Structural damping is generally specified directly in terms of stiffness and mass proportional damping coefficients as described in Damping (Eq.1). By default, a single value of each coefficient is assigned to all elements in the model. However, it is also possible to assign different damping coefficients to various element sets within the model, in which case individual entries of K and M are scaled by appropriate values of λ and μ, and C is assembled by a matrix addition of the relevant component terms. Note that this option is only available in time domain dynamic analyses, and any damping specified in a frequency domain analysis is applied to all elements in the model.
•*DAMPING is used to incorporate damping into a dynamic analysis.