Spring and Damping Energies
In stationary and time-dependent analysis, the elastic energy in the spring is computed as
In a time-dependent analysis, the energy dissipated in the damper,
W
d
, is computed using an extra degree of freedom. The following equation is added:
In a frequency domain analysis, the elastic energy in the spring and the energy dissipated in the damper are computed as
These energy quantities represent the cycle average, and only the perturbation terms are included.
