Abstract:Are dynamic characteristics of a rotorsliding bearing system scaled model similar to those of the original system? To answer this problem, dynamic similarity criteria for rotorsliding bearing systems considering gyroscopic moment and nonlinear oil film force were derived by using the dimensional analysis method, and the similarity ratios of physical variables of the scaled model to those of the original system were obtained. The theoretical study showed that the dynamic similarity requirements of rotorsliding bearing systems can be met by using the static load compensation measures of sliding journal bearings of the scaled rotor system; the critical speed, stability threshold speed and imbalance response of the scaled system after compensation and those of the original system have a similarity; the correctness of dynamic similarity criteria of rotor systems proposed here is verified using comparative analysis for imbalance response characteristics of the scaled system model and those of the original system with different rotor geometric ratios, material density ratios and elastic modulus ratios.
王永亮1,崔颖1,韩聿1,曾之禄2. 转子-滑动轴承系统动力学相似性研究[J]. 振动与冲击, 2017, 36(1): 153-160.
WANG Yongliang1, CUI Ying1, HAN Yu1, ZENG Zhilu2. Dynamic similarity of rotorsliding bearing systems. JOURNAL OF VIBRATION AND SHOCK, 2017, 36(1): 153-160.
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