Bearing device vibration analysis method, bearing device vibration analysis device, and rolling bearing status monitoring device

摘要

A vibration analysis method includes a step of inputting damage data for a rolling bearing (S10), a step of calculating, with a dynamics analysis program, a history of excitation forces occurring, due to damage, in the rolling bearing when a rotary shaft of the rolling bearing is rotating (S40), a step of calculating, with a mode analysis program, a vibration characteristics model of the bearing device (S60), and a step of calculating a vibration waveform in a prescribed location of the bearing device by applying the history of the excitation forces calculated in the step of calculating the history of the excitation forces (S40) to the vibration characteristics model (S80).