Dynamic stiffness | CDYN = (Fmax - Fmin)/(2*amplitude) |
Strain energy | W = (Fmax - Fmin)*amplitude/4 |
Loss energy | dW = abs(Integral(F(t)*vel(t) dt)) in the interval [(i-1)*2pi , i*2pi] |
Relative damping | PSI = dW / W |
Loss angle | PHI = asin( PSI / (2*pi) ) |