Cylindrical roller bearing inner and outer raceway composite fault vibration simulation method

• Main Authors: LUO MAOLIN, SU ZUQIANG, HU FENG, DAI JIN, YANG SONG, TANG ZHI
• Format: Patent
• Language: Chinese; English
• Published: 05.07.2024
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; MEASURING; PHYSICS; TESTING; TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR

The invention relates to the technical field of fault diagnosis and signal processing and analysis, in particular to a vibration simulation method for composite faults of inner and outer raceways of a cylindrical roller bearing. Relevant parameters, operation conditions, sampling frequency and simulation duration of the faulted cylindrical roller bearing are obtained; calculating composite time-varying displacement excitation caused by the circumferential angle position of the bearing, the internal radial clearance of the bearing, the inner raceway defect and the outer raceway defect by utilizing the obtained related parameters, the operation condition, the sampling frequency and the simulation time length; a cylindrical roller bearing composite fault model based on defect angular position transformation is constructed by using the bearing circumferential angle position, the bearing internal radial clearance, the time-varying displacement excitation caused by the inner raceway defect and the time-varying disp