抄録
A prediction method is proposed for the eigenvalues analysis of coupled structural-acoustic system. The method is based on the extrapolation numerical method. Fine FEM solutions are predicted via rough mesh fem results about coupled system by the method. The extrapolation method with two-step is presented. Numerical results show that the convergence precision is improved with the method for the same mesh level, and the computing work can be reduced a lot for getting the same precision.
