An aeroelastic analysis system(AEAS) was been designed to perform aeroelastic analysis for three-dimensional turbomachinery rotor blade models.A time-marching method was applied in AEAS for transient displacement and dynamic stress responses of rotor blades

thus simulating aeroelastic phenomena in compressor rotors.Forced response and flutter analyses modules are two major aeroelastic modules in the AEAS code.In forced response analysis

periodic unsteady pressure field was applied to rotor blades at possible resonances on Campbell diagram to compute the amplitudes of dynamic stresses

therefore dangerous conditions of rotors were assessed.In flutter analysis

the structural solver and the unsteady flow solver were invoked alternately; transient responses of blades were provided to determine whether flutter occurs.Numerical results show good agreement with experimental measurements

indicating that it is possible to obtain dynamic stresses in fluid induced vibration analyses using the time-marching method.