Study on the vibration characteristics of full ceramic ball bearings under low temperature working conditions
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To better understand the vibration characteristics of full ceramic ball bearings operating under low temperature conditionsand ultimately reduce vibration levels to improve their service life, a low temperature bearing test machine was utilizedto analyze the dynamic characteristics of the bearings. Vibration measurements were taken to determine the vibrationacceleration root-mean-square value of the full ceramic ball bearings under varying rotational speeds and loads. The resultsshow that the vibration acceleration reaches up to 3.17865 m/s² at room temperature. At around -100 ℃, the vibration reachesthe lowest point, which is only 0.65415 m/s². As the temperature decreases, the vibration decreases gradually, especially whenthe temperature drops below -20 °C, the vibration decreases sharply. It was found that as the rotational speed increased, sodid the vibration acceleration of the bearings, while the vibration acceleration showed a trend of decreasing initially and thenstabilizing with increasing load. By comparing and analyzing simulation and test results, the simulation model was optimizedand a vibration model specific to full ceramic ball bearings was established. These findings provide a theoretical foundationfor the use of full ceramic ball bearings in low temperature environments, offering valuable insights for reducing vibrationand enhancing bearing longevity.
Abstract
To better understand the vibration characteristics of full ceramic ball bearings operating under low temperature conditionsand ultimately reduce vibration levels to improve their service life, a low temperature bearing test machine was utilizedto analyze the dynamic characteristics of the bearings. Vibration measurements were taken to determine the vibrationacceleration root-mean-square value of the full ceramic ball bearings under varying rotational speeds and loads. The resultsshow that the vibration acceleration reaches up to 3.17865 m/s² at room temperature. At around -100 ℃, the vibration reachesthe lowest point, which is only 0.65415 m/s². As the temperature decreases, the vibration decreases gradually, especially whenthe temperature drops below -20 °C, the vibration decreases sharply. It was found that as the rotational speed increased, sodid the vibration acceleration of the bearings, while the vibration acceleration showed a trend of decreasing initially and thenstabilizing with increasing load. By comparing and analyzing simulation and test results, the simulation model was optimizedand a vibration model specific to full ceramic ball bearings was established. These findings provide a theoretical foundationfor the use of full ceramic ball bearings in low temperature environments, offering valuable insights for reducing vibrationand enhancing bearing longevity.
참고문헌 (21)
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