Damping:

*Material, ...
*Damping
alpha, beta

This parameter is used to consider Rayleigh damping using the damping constants \(\alpha\) and \(\beta\).

The damping constants \(\alpha\) and \(\beta\) are frequency-dependent: \(\alpha = 2 \bar{\zeta} \omega\), \(\beta = \frac{2 \bar{\zeta}}{\omega}\) where \(\bar{\zeta}\) is the given damping measure and \(\omega\) is the angular frequency. Assuming that the Rayleigh damping is approximately constant over a given frequency range \(\omega_1 \leq \omega \leq \omega_2\), the damping coefficients for a given damping measure can be determined as follows: \(\alpha = 2 \zeta \frac{\omega_1 \omega_2}{\omega_1 + \omega_2}\), \(\beta = \frac{2 \zeta}{\omega_1 + \omega_2}\)