Regular algorithm for the automatic refinement of the spectral characteristics of acoustic finite element models

A new method is presented for the automatic refinement of finite element models of complex mechanical–acoustic systems using the results of experimental studies. The method is based on control of the spectral characteristics via selection of the optimal distribution of adjustments to the stiffness of a finite element mesh. The results of testing the method are given to show the possibility of its use to significantly increase the simulation accuracy of vibration characteristics of bodies with arbitrary spatial configuration.