Abstract
An identification method of vibrational damping parameters for roll core materials of sandwich panels is presented by using the finite element eigenvalue analysis. The vibrational damping model proposed by Adams et al. is used to calculate damping ratios for identification problems. The identification problem of vibrational damping parameters can be converged as a nonlinear optimization problem. Vibrational damping parameters are identified by using the quasi-Newton method, so that damping ratios calculated by the finite element analysis may be agree with those measured by the vibration test. As numerical examples, equivalent vibrational damping parameters of roll core sandwich panels are identified and compared with the experimental results.
