Time-domain damping models in structural acoustics using digital filtering
We propose an original approach to provide well-posed time-domain damping modeling. We build a discrete-time constitutive law which is interpreted as a digital filter. The filter is synthetized from complex modulus data through an optimization problem. We add constraints to ensure stability, causality and dissipation of the model. Resulting discrete model is implemented in an energy-preserving numerical scheme.
damping digital filtering time-domain modeling vibroacoustics