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https://doi.org/10.21278/TOF.42306

Research on Steady-State Characteristics of Centrifugal Pump Rotor System with Weak Nonlinear Stiffness

Wenjie Zhou ; School of Energy and Power Engineering, Jiangsu University, Zhenjiang, China
Ning Qiu ; Research Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang, China
Ning Zhang ; School of Energy and Power Engineering, Jiangsu University, Zhenjiang, China
Zhounian Lai ; Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Hong Kong, China
Bo Gao ; School of Energy and Power Engineering, Jiangsu University, Zhenjiang, China

Puni tekst: engleski, pdf (2 MB) str. 87-102 preuzimanja: 358* citiraj
APA 6th Edition
Zhou, W., Qiu, N., Zhang, N., Lai, Z. i Gao, B. (2018). Research on Steady-State Characteristics of Centrifugal Pump Rotor System with Weak Nonlinear Stiffness. Transactions of FAMENA, 42 (3), 87-102. https://doi.org/10.21278/TOF.42306
MLA 8th Edition
Zhou, Wenjie, et al. "Research on Steady-State Characteristics of Centrifugal Pump Rotor System with Weak Nonlinear Stiffness." Transactions of FAMENA, vol. 42, br. 3, 2018, str. 87-102. https://doi.org/10.21278/TOF.42306. Citirano 19.10.2021.
Chicago 17th Edition
Zhou, Wenjie, Ning Qiu, Ning Zhang, Zhounian Lai i Bo Gao. "Research on Steady-State Characteristics of Centrifugal Pump Rotor System with Weak Nonlinear Stiffness." Transactions of FAMENA 42, br. 3 (2018): 87-102. https://doi.org/10.21278/TOF.42306
Harvard
Zhou, W., et al. (2018). 'Research on Steady-State Characteristics of Centrifugal Pump Rotor System with Weak Nonlinear Stiffness', Transactions of FAMENA, 42(3), str. 87-102. https://doi.org/10.21278/TOF.42306
Vancouver
Zhou W, Qiu N, Zhang N, Lai Z, Gao B. Research on Steady-State Characteristics of Centrifugal Pump Rotor System with Weak Nonlinear Stiffness. Transactions of FAMENA [Internet]. 2018 [pristupljeno 19.10.2021.];42(3):87-102. https://doi.org/10.21278/TOF.42306
IEEE
W. Zhou, N. Qiu, N. Zhang, Z. Lai i B. Gao, "Research on Steady-State Characteristics of Centrifugal Pump Rotor System with Weak Nonlinear Stiffness", Transactions of FAMENA, vol.42, br. 3, str. 87-102, 2018. [Online]. https://doi.org/10.21278/TOF.42306

Sažetak
Steady-state vibration response characteristics of a motion model of a centrifugal pump rotor system with weak nonlinear stiffness have been calculated by using the multiple scale method (MSM). The theoretical results were in good agreement with the numerical results. Based on the MSM and the numerical method, the effects of detuning parameter, nonlinear stiffness parameter and natural frequency on steady-state amplitude were also investigated. Finally, Lyapunov's theorem on stability in the first approximation was applied for the determination of the system’s stable and unstable solution regions. The calculated results imply that the centrifugal pump rotor system with weak nonlinear stiffness exhibits typical nonlinear vibration characteristics. The variation of detuning parameter, nonlinear stiffness parameter and natural frequency can result in a jump phenomenon, and their corresponding curves present ‘hard spring’, ‘soft spring’ and ‘S’-shaped amplitude characteristic, respectively. Smaller detuning parameter and natural frequency or greater nonlinear stiffness parameter are beneficial to decreasing the steady-state response amplitude. The results can provide reference for an investigation into nonlinear vibration characteristics of a centrifugal pump rotor system.

Ključne riječi
centrifugal pump; rotor system; steady-state characteristics; weak nonlinear stiffness; multiple scale method (MSM)

Hrčak ID: 206946

URI
https://hrcak.srce.hr/206946

Posjeta: 636 *