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This card is used to define Rayleigh damping for implicit dynamic calculations (*DYNAMIC). There are two required parameters: ALPHA and BETA.
Rayleigh damping is applied in a
global way, i.e. the damping matrix 
![$ \left [ C \right ]$](img1295.png) is taken to be a linear combination of the
stiffness matrix
 is taken to be a linear combination of the
stiffness matrix 
![$ \left [ K \right ]$](img1296.png) and the mass matrix
 and the mass matrix 
![$ \left [ M \right ]$](img1297.png) :
:
| ![$\displaystyle \left [ C \right ] = \alpha \left [ M \right ] + \beta \left [ K \right ].$](img1298.png) | (333) | 
Right now, only one *DAMPING card can be used in the input deck. It applies to the whole model.
First line:
Example: *DAMPING,ALPHA=5000.,BETA=2.e-3
indicates that a damping matrix is created by multiplying the mass matrix with
 and adding it to the stiffness matrix multiplied by
 and adding it to the stiffness matrix multiplied by 
 
Example files: beamimpdy1, beamimpdy2.