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*DAMPING

Keyword type: model definition

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 is taken to be a linear combination of the stiffness matrix and the mass matrix :

| (333)

Right now, only one *DAMPING card can be used in the input deck. It applies to the whole model.

First line:

- *DAMPING
- Enter ALPHA and BETA and their values.

    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

Example files: beamimpdy1, beamimpdy2.