Convergence Tolerance
Convergence tolerance is the tolerance that determines when the objective function has converged. The optimization stops when this tolerance is met. Specifically, the convergence tolerance is satisfied if:
(convergence tolerance) > (error_dynamic_stiffness + error_loss_angle)*100/number_of_frequencies
where
error_dynamic_stiffness = Sqrt(Sum_of_all((stiffness_calculated - stiffness_measured)**2))/stiffness_measured_middle
and
error_loss_angle = Sqrt(Sum_of_all((loss_angle_calculated - loss_angle_measured)**2))/loss_angle_middle_measured)