BEARING DEVICE VIBRATION ANALYSIS METHOD, BEARING DEVICE VIBRATION ANALYZER, AND ROLLING BEARING CONDITION MONITORING SYSTEM

摘要

A vibration analysis method includes the steps of: inputting damage data of a rolling bearing; calculating, by a dynamics analysis program, a history of an exciting force occurring to the rolling bearing due to damage when a rotational shaft of the rolling bearing is rotated; calculating, by a mode analysis program, a vibration characteristics model of the bearing device; and calculating a vibration waveform at a predetermined position on the bearing device by applying to the vibration characteristics model the history of the exciting force calculated in the step of calculating a history of an exciting force.

主权项

1. A bearing device vibration analysis method for analyzing, by a computer, vibration of a bearing device including a rolling bearing and a housing of the rolling bearing, the method comprising the steps of:
inputting data about a shape of damage given to a contact portion where a rolling element and a raceway surface of said rolling bearing contact each other; calculating a history of an exciting force by a dynamics analysis program for conducting a dynamics analysis of said rolling bearing, the history of the exciting force occurring to said rolling bearing due to said damage when a rotational shaft of said rolling bearing is rotated; calculating a vibration characteristics model by a mode analysis program for analyzing a vibration mode of said bearing device, the vibration characteristics model representing vibration characteristics of said bearing device; and calculating a vibration waveform at a predetermined position on said bearing device by applying to said vibration characteristics model the history of the exciting force calculated in said step of calculating a history of an exciting force.