Dynamic modeling and optimization of the supporting structure of a propulsion shaft system by an FRF-based substructuring method
HUANG Xiuchang 1，2，3 SU Zhiwei 1 NI Zhen 1 ZHANG Zhenguo 1 HUA Hongxing 1，2，3
1.Institute of Vibration,Shock and Noise,Shanghai Jiao Tong University,Shanghai 200240,China;
2.State Key Laboratory of Mechanical System and Vibration,Shanghai Jiao Tong University,Shanghai 200240,China;
3.Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration(CISSE),Shanghai Jiao Tong University,Shanghai 200240,China
Abstract：A FRF-based substructuring method was proposed for dynamic modeling of a propulsion shaft system.The method took into consideration of cross stiffness of oil film,the excitation of both propeller and propulsion machine.The dynamic model of the coupled system was based on two synthesis processes for substructures,i.e.,propeller- propulsion shaft,bearings,coupling,propulsion machine,isolators and hull.FRF-based substructuring sensitivity analysis was employed to evaluate the optimal stiffness of bearings,coupling and isolators under the objective function of mean-square forces and power flow transmitted to the foundation.The proposed method is of great efficiency.For the studied model,the stiffness of the bearings and the isolators should be lowered; the stiffness of coupling should be increased to obtain small vibration transmission.
黄修长 1，2，3,苏智伟 1，倪臻 1，张振果 1，华宏星 1，2，3. 基于频响函数综合的推进轴系动力学建模与支撑结构参数优化分析[J]. 振动与冲击, 2019, 38(4): 33-39.
HUANG Xiuchang 1，2，3 SU Zhiwei 1 NI Zhen 1 ZHANG Zhenguo 1 HUA Hongxing 1，2，3 . Dynamic modeling and optimization of the supporting structure of a propulsion shaft system by an FRF-based substructuring method. JOURNAL OF VIBRATION AND SHOCK, 2019, 38(4): 33-39.
[1]. Zhang, G.,Zhao, Y.,Li, T., etc. Propeller excitation of longitudinal vibration characteristics of marine propulsion shafting system[J]. Shock and Vibration, 2014, 2014.
[2]. Wei, Y.,Wang, Y. Unsteady hydrodynamics of blade forces and acoustic responses of a model scaled submarine excited by propeller's thrust and side-forces[J]. Journal of Sound & Vibration, 2013, 332 (8): 2038-2056.
[3]. Caresta, M.,Kessissoglou, N. J. Vibration of a submarine hull under harmonic propeller‐shaft excitation[J]. Journal of the Acoustical Society of America, 2008, 123 (5): 3062-3062.
[4]. Dylejko, P.,Kessissoglou, N. Minimization of the vibration transmission through the propeller‐shafting system in a submarine[J]. Journal of the Acoustical Society of America, 2004, 116 (4): 2569-2569.
[5]. Merz, S.,Kessissoglou, N.,Kinns, R., etc. Passive and active control of the radiated sound power from a submarine excited by propeller forces[J]. Journal of Ship Research, 2013, 57 (1): 59-71.
[6]. Caresta, M.,Kessissoglou, N. J. Reduction of hull-radiated noise using vibroacoustic optimization of the propulsion system[J]. Journal of Ship Research, 2011, 55 (3): 149-162.
[7]. Merz, S.,Kessissoglou, N.,Kinns, R., etc. Minimisation of the sound power radiated by a submarine through optimisation of its resonance changer[J]. Journal of Sound & Vibration, 2010, 329 (8): 980-993.
[8]. Song, Y.,Wen, J.,Yu, D., etc. Reduction of vibration and noise radiation of an underwater vehicle due to propeller forces using periodically layered isolators[J]. Journal of Sound & Vibration, 2014, 333 (14): 3031-3043.
[9]. Z. Zhang, E. Rustighi, Y. Chen, and H. Hua, Active control of the longitudinal-lateral vibration of a shaft-plate coupled system, Journal of Vibration and Acoustics, 134 (6) (2012) 061002.
[10]. 黄修长, 舱筏隔振系统声学设计及优化、控制[D], 上海交通大学博士论文, 2011.
