VIBRATING VELOCITY RECONSTRUC-TION USING IBEM AND TIKHONOV REGULARIZATION

摘要

The inverse problem to determine the vibrating velocity from konwn exterior field meas-urement pressure ,involes the solution of a discrete ill-posed problem.To facilitate the computation of a meaningful approximate solution possible,the indirect boundary element method (IBEM) code for invesigating vibration velocity reconstruction and Tikhonov regulariztion method by means of sin-gular value decomposition (SVD)are used,The amount of regulariztion is determined by a regulari-zation parameter,Its optimal value is given by the L-cure approach,Numerical results indicate the reconstructed normal suface velocity is a good approximation to the real source.