轴承随机激励对转子系统随机响应的影响
|
摘要
应用虚拟激励法,通过计算机数值模拟,分析了悬臂双盘转子系统在轴承回转随机动力激励、转子不平衡随机激励和地面随机地震激励下的随机响应.分析结果表明:轴承回转随机动力激励对轴承的随机响应影响较大,对圆盘的随机响应影响较小,轴承刚度差应控制在一定的范围内;悬臂端圆盘和非悬臂端轴承的随机振动应该提起更多的关注。
With the method of pseudo-excitation,the random response of a cantilever double-disc rotor system under bearing rotary random excitation,rotor imbalance random excitation and ground random seismic excitation were analyzed using computer numerical simulations.The results showed that the bearing rotary random excitation has a larger effecr on the random responses of bearings,but a smaller effect on the random responses of disks,so the bearing stiffness difference should be controlled within a certain range;more attentions should be paid to the random vibration responses of the disk at the free end and bearings at the clamped end.
With the method of pseudo-excitation,the random response of a cantilever double-disc rotor system under bearing rotary random excitation,rotor imbalance random excitation and ground random seismic excitation were analyzed using computer numerical simulations.The results showed that the bearing rotary random excitation has a larger effecr on the random responses of bearings,but a smaller effect on the random responses of disks,so the bearing stiffness difference should be controlled within a certain range;more attentions should be paid to the random vibration responses of the disk at the free end and bearings at the clamped end.
引文
[1]闻邦椿,武新华,丁千.故障旋转机械非线性动力学的理论与试验[M].北京:科学出版社,2004.
[2]Yanbe S.Rotor vibration due to collision with annular guard during passage through critical speed[J].ASME Journal of Vibration and Acoustics,1998,120:544-550.
[3]Yuan H Q,Li H G,Wen B C.Study on stability and bifurcation behavior of the rotor with local rubbing[C]∥Proceedings of the First International Conference on the Integration of Dynamics,Monitoring and Control.Manchester:[s.n.],1999:305-308.
[4]Wen B C,Li Z P,Yao H L,et al.Dynamics of rotor-bearing system with coupling faults of pedestal looseness and rubimpact[C]∥Proceedings of the 11th World Congress on Theory of Machine and Mechanism.Tianjin:[s.n.],2004:156-165.
[5]Sankaravelu A,Noah S T,Burger C P.Bifurcation and chaos in ball bearings[J].Nonlinear and Stochastic Dynamics,1994,192(78):313-325.
[6]Wang Y.Prediction of periodic response of rotor dynamics stems with nonlinear supports[J].ASME Journal of Vibration and Acoustics,1997,119:346-353.
[7]Zhang Y M,Wen B C.Reliability sensitivity for rotor-stator systems with rubbing[J].Journal of Sound and Vibration,2003,259(5):1095-1107.
[8]赵岩,林家浩,曹建华.转轴系统平稳随机地震响应的变异性分析[J].工程力学,2002,19(2):26-31.ZHAO Yan,LIN Jia-hao,CAO Jian-hua.Variation analysis of shaft systems subjected to stationary random seismic excitations[J].Engineering Mechanics,2002,19(2):26-31.
[9]赵岩,林家浩,曹建华.转子系统的平稳/非平稳随机地震响应分析[J].计算力学学报,2002,19(1):8-11.ZHAO Yan,LIN Jia-hao,Cao Jian-hua.Seismic analysis of rotor system under stationary nonstationary random earthquake excitations[J].Chinese Journal of Computational Mechanics,2002,19(1):8-11.
[10]林家浩,钟万勰.关于虚拟激励法与结构随机响应的注记[J].计算力学学报,1998,15(2):217-223.LIN Jia-hao,ZHONG Wan-xie.Some notes on FEM and structural random response analysis[J].Chinese Journal of Computational Mechanics,1998,15(2):217-223.
[11]Lin J H,Zhang W S,Li J J.Structural response to arbitrarily coherent stationary random excitations[J].Computers&Structures,1994,50(5):629-634.
[12]袁惠群,王德友,闻邦椿.某发动机转子—机匣系统局部碰摩的混沌运动研究[J].工程力学,2002,19(3):50-54.YUAN Hui-qun,WANG De-you,WEN Bang-chun.Bifurcation and chaos behavior of rotor-box with local rubbing[J].Engineering Mechanics,2002,19(3):50-54.
[2]Yanbe S.Rotor vibration due to collision with annular guard during passage through critical speed[J].ASME Journal of Vibration and Acoustics,1998,120:544-550.
[3]Yuan H Q,Li H G,Wen B C.Study on stability and bifurcation behavior of the rotor with local rubbing[C]∥Proceedings of the First International Conference on the Integration of Dynamics,Monitoring and Control.Manchester:[s.n.],1999:305-308.
[4]Wen B C,Li Z P,Yao H L,et al.Dynamics of rotor-bearing system with coupling faults of pedestal looseness and rubimpact[C]∥Proceedings of the 11th World Congress on Theory of Machine and Mechanism.Tianjin:[s.n.],2004:156-165.
[5]Sankaravelu A,Noah S T,Burger C P.Bifurcation and chaos in ball bearings[J].Nonlinear and Stochastic Dynamics,1994,192(78):313-325.
[6]Wang Y.Prediction of periodic response of rotor dynamics stems with nonlinear supports[J].ASME Journal of Vibration and Acoustics,1997,119:346-353.
[7]Zhang Y M,Wen B C.Reliability sensitivity for rotor-stator systems with rubbing[J].Journal of Sound and Vibration,2003,259(5):1095-1107.
[8]赵岩,林家浩,曹建华.转轴系统平稳随机地震响应的变异性分析[J].工程力学,2002,19(2):26-31.ZHAO Yan,LIN Jia-hao,CAO Jian-hua.Variation analysis of shaft systems subjected to stationary random seismic excitations[J].Engineering Mechanics,2002,19(2):26-31.
[9]赵岩,林家浩,曹建华.转子系统的平稳/非平稳随机地震响应分析[J].计算力学学报,2002,19(1):8-11.ZHAO Yan,LIN Jia-hao,Cao Jian-hua.Seismic analysis of rotor system under stationary nonstationary random earthquake excitations[J].Chinese Journal of Computational Mechanics,2002,19(1):8-11.
[10]林家浩,钟万勰.关于虚拟激励法与结构随机响应的注记[J].计算力学学报,1998,15(2):217-223.LIN Jia-hao,ZHONG Wan-xie.Some notes on FEM and structural random response analysis[J].Chinese Journal of Computational Mechanics,1998,15(2):217-223.
[11]Lin J H,Zhang W S,Li J J.Structural response to arbitrarily coherent stationary random excitations[J].Computers&Structures,1994,50(5):629-634.
[12]袁惠群,王德友,闻邦椿.某发动机转子—机匣系统局部碰摩的混沌运动研究[J].工程力学,2002,19(3):50-54.YUAN Hui-qun,WANG De-you,WEN Bang-chun.Bifurcation and chaos behavior of rotor-box with local rubbing[J].Engineering Mechanics,2002,19(3):50-54.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心