RDMP
RDMP, type, val1, val2, dr1, dr2;
Defines Rayleigh damping for harmonic and transient simulations
- Rayleigh damping is superimposed to the constant damping ratio (if the modal superposition solver is off) and to the modal damping ratios (if the modal superposition solver is on).
- Rayleigh damping is defined by the damping ratios at two characteristic frequencies. Negative alpha-beta-multiplies can be set to zero in the Simulation Settings window.
Input Data⚓︎
| Parameter | Description |
|---|---|
type |
Type of frequency specifications → freq - Frequencies are specified by numbers→ mode - Frequencies are taken from eigenmodes |
val1 |
→ If type = freq - First frequency→ If type = mode - First eigenmode |
val2 |
→ If type = freq - Second frequency→ If type = mode - Second eigenmode |
dr1 |
Damping ratio for the first frequency or eigenmode |
dr2 |
Damping ratio for the second frequency or eigenmode |