Acoustic analysis is an important type of field analysis problem. Based on the finite element method (FEA), the finite element model of a certain rotor blade in radiation field excited by high strength acoustic wave was built in this paper. And then, the stress and sound pressure distribution in the four different types of radiation fields were computed and compared to each other. The results of numerical simulation are consistent with the results of experimental tests for three types of rotor blades, which reveal the influence d...