Abstract:It is a great advancement to solvevibro-acoustic problems using vibration power flow methods. Avibro-acoustic problem may fall into three different ranges: low frequency range, mid-frequency range and highfrequency range. Finite element method (FEM), mobility power flow method, statistical energy analysismethod (SEA), energy finite element method (EFEM), parameter-basedstatistical energy method, sub-structure method, hybrid method based onLagrange multiplier or FEM/SEAor FEM/EFEM are discussedin this paper. Because they have different ranges of frequency forapplication, these methods may be combined tosolve a vibration problem.