Abstract：The random vibration of a skewed propeller-shaft system induced by homogeneous turbulence was numerically investigated. Firstly, the unsteady pressure spectrum exerted on the propeller surface by homogeneous turbulence was computed with the correlation analysis method to obtain its spatial distribution. Secondly, taking the computed unsteady pressure spectrum as the input, the elastic vibration responses of the system were solved with the random vibration theory. The results were compared with those of the corresponding rigid propeller-shaft system. Finally, the effects of elasticity, damping, etc, on random vibration responses of the system were analyzed through varying the system’s dynamic parameters. The results showed that the softer the shaft material and the harder the propeller blade material, the smaller the random vibration responses of the system induced by turbulence; increasing the system’s damping can obviously decrease vibration responses of the system near its natural frequencies. This study laid a foundation for further studying vibration and noise reduction of skewed propeller-shaft systems in submarines.
王力 、谌勇 、华宏星. 均匀湍流诱发的侧斜螺旋桨的随机振动特性研究[J]. 振动与冲击, 2018, 37(5): 7-12.
WANG Li CHEN Yong HUA Hongxing . Random vibration of a skewed propeller-shaft system induced by homogeneous turbulence. JOURNAL OF VIBRATION AND SHOCK, 2018, 37(5): 7-12.
[1] Xie J, Zhou Q, Joseph P F. Tone noise prediction of a propeller operating in non-uniform flows [J]. AIAA journal, 2011, 49(1): 111-118.
[2] Dylejko P G, Kessissoglou N J, Tso Y, et al. Optimisation of a resonance changer to minimise the vibration transmission in marine vessels[J]. Journal of sound and vibration, 2007, 300(1): 101-116.
[3] Blake W K. Mechanics of flow-induced sound and vibration V2: complex flow-structure interactions [M]. Dutch: Elsevier, 2012.
[4] Homicz G F, George A R. Broadband and discrete frequency radiation from subsonic rotors [J]. Journal of Sound and Vibration, 1974, 36(2): 151-177.
[5] Thompson D E. Propeller time-dependent forces due to non-uniform flow [D]. Pennsylvania State: Pennsylvania State University, 1976.
[6] Sevik M M. The Response of a Propulsor to Random Velocity Fluctuations[R]. NO. N00017-70-C-1407-2,PENNSYLVANIA STATE UNIV UNIVERSITY PARK ORDNANCE RESEARCH LAB, 1970.
[7] Merz S, Kinns R, Kessissoglou N. Structural and acoustic responses of a submarine hull due to propeller forces[J]. Journal of Sound and Vibration, 2009, 325(1): 266-286.
[8] Anderson J M, Catlett M R, Stewart D O. Modeling rotor unsteady forces and sound due to homogeneous turbulence ingestion[J]. AIAA journal, 2014, 53(1): 81-92.
[9] Jiang C W, Chang M, Liu Y. The effect of turbulence ingestion on propeller broadband forces [J]. 1994.
[10] Catlett M R, Anderson J M, Stewart D O. Aeroacoustic Response of Propellers to Sheared Turbulent Inflow[C]//18th AIAA/CEAS Aeroacoustics Conference. 2012: 2012-2137.
[11] Lachowski F F. Aerodynamic analysis of a propeller in a turbulent boundary layer flow [M]. Thesis (M.S.)--Florida Atlantic University, 2013.
[12] Massaro M, Graham J M R. The effect of three-dimensionality on the aerodynamic admittance of thin sections in free stream turbulence[J]. Journal of Fluids and Structures, 2015, 57: 81-90.
[13] Sears W R. Some aspects of non-stationary airfoil theory and its practical application[J]. Journal of the Aeronautical Sciences, 1941, 8(3): 104-108.
[14] Newton R E, Zienkiewicz O C. Coupled vibrations of a structure submerged in a compressible fluid[C]//Paper at International Symposium of Finite Element Techniques, Stuttgart. 1969.
[15] Goodwin A J H. The design of a resonance changer to overcome excessive axial vibration of propeller shafting [J]. Trans. Inst. Mar. Eng, 1960, 72: 37-63.
[16] 张磊, 吴小平, 刘洋浩. 船用螺旋桨三维建模方法研究[J]. 船舶与海洋工程, 2014, 2: 010.
[17] Young Y L. Fluid–structure interaction analysis of flexible composite marine propellers [J]. Journal of Fluids and Structures, 2008, 24(6): 799-818
