Nonlinear Response Analysis of Three-Span Rotor-Bearing System with Three Cracks in Shafts

Abstract:

The model of three-span rotor-bearing system with three cracks in shaft supporting on the six sliding bearings was set up. The influences of crack faults to the responses of the rotor system were studied on numerical simulation. Along with the increase of the crack depth in first span, the main influence to the dynamic characteristics of the system is in the first span. Along with the increase of the crack depth in second span, the main influences to the response of first and third spans are in the region of critical rotate speed, and it to the second span is in the regions of critical and supercritical rotate speed. Along with the increase of the crack depth in third span, the main influences to the response of the three spans are in the region of critical rotate speed.

• Periodical: Advanced Materials Research (Volumes 753-755)
• Pages: 1093-1097
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.753-755.1093
• Online since: August 2013
• Authors: Song He Zhang, Yuegang Luo, Bin Wu, Hong Ying Hu
• Keywords: Chaos, Nonlinear Response, Quasi-Periodic Motion, Rotor-Bearing System, Shaft Crack

References

[1] J. Wauer: Modeling and formulation of equations of motion for cracked rotating shafts, International Journal of Solids Structures, Vol. 26(1990), pp.901-914.

DOI: 10.1016/0020-7683(90)90076-8

[2] A.K. Darpe: A. Chawla, K. Gupta: Analysis of the response of a cracked Jeffcott rotor to axial excitation, Journal of Sound and Vibration, Vol. 249(2002), pp.429-445.

DOI: 10.1006/jsvi.2001.3870

[3] H. Zhu, M. Zhao: A study on the coupled vibration of cracked rotor, Chinese Journal of Applied Mechanics, Vol. 18(2001), pp.65-70.

[4] W. Qin, G. Meng, X. Ren: On nonlinear response of cracked rotor with midspan and overhung disc, Journal of Northwestern Polytechnical University, Vol. 22(2004), pp.213-216.

[5] A.K. Darpe: Dynamic response of an accelerating two-crack Jeffcott rotor, Advancesin Vibration Engineering, Vol. 9(2010), pp.35-51.

[6] T. Chen, J. Jing, G. Meng, et al: FEM simulation of characteristics of a rotor with two cracks, Noise and Vibration Control, Vol. 30(2010), pp.15-19.

[7] Y. Luo, S. Zhang, X. Liu, et al: Stability of a two-span rotor-bearing system with crack fault, Transactions of the Chinese Society for agricultural Machinery, Vol. 38(2007), pp.168-172.

[8] S. Zhang, Y. Luo, B. Wu, et al: Dynamic behavior analysis of three-span rotor-bearing system with rub-impact fault, Advanced Materials Research, Vols. 460(2012), pp.160-164.

DOI: 10.4028/www.scientific.net/amr.460.160