0
Research Papers: Internal Combustion Engines

Three-Dimensional Vibration of the Crankshaft of a Large Marine Diesel Engine Under a Mixed Thermo-Elastic-Hydro-Dynamic Lubrication Coupling Between Flexible Crankshaft and Engine Block

[+] Author and Article Information
Lidui Wei

Merchant Marine College,
Shanghai Maritime University,
1550 Haigang Avenue,
Shanghai 201306, China
e-mail: weilidui@163.com

Haijun Wei

Merchant Marine College,
Shanghai Maritime University,
1550 Haigang Avenue,
Shanghai 201306, China
e-mail: hjwei@shmtu.edu.cn

Haiping Du

School of Electrical, Computer
and Telecommunications Engineering,
University of Wollongong,
Northfields Avenue,
Wollongong 2552, NSW, Australia
e-mail: haipingduuow@gmail.com

Shulin Duan

Marine Engineering College,
Dalian Maritime University,
1 Linghai Road,
Dalian 116026, China
e-mail: oliverduan@163.com

1Corresponding author.

Contributed by the IC Engine Division of ASME for publication in the JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received January 15, 2017; final manuscript received September 8, 2017; published online January 23, 2018. Assoc. Editor: Philip Bonello.

J. Eng. Gas Turbines Power 140(6), 062802 (Jan 23, 2018) (10 pages) Paper No: GTP-17-1018; doi: 10.1115/1.4038457 History: Received January 15, 2017; Revised September 08, 2017

To predict the vibration characteristics of the crankshaft of the larger marine diesel engine accurately and comprehensively, based on the finite element models of the crankshaft and the engine block reduced by a component mode synthesis (CMS) method as well as extended Reynolds equation and Greenwood-Tripp theory, a mixed thermo-elasto-hydro-dynamic lubrication coupling model between a whole flexible engine block and a rotating flexible crankshaft is set up. According to this strongly coupled nonlinear model, the torsional-axial-lateral three-dimensional (3D) vibration of the crankshaft can be calculated simultaneously. The method is verified through comparison with other computational methods. Also, the vibrations are compared under different support models and whether to consider the effect of temperature. Specific 3D vibrations are displayed, and some stage nonlinear characteristics are shown in 3D direction. The modeling method will contribute to reveal the vibration mechanism and optimize the design of the shafting system.

FIGURES IN THIS ARTICLE
<>
Copyright © 2018 by ASME
Your Session has timed out. Please sign back in to continue.

References

China Classification, S. , 2012, The Ship Vibration Control Guidelines, China Communications Press, Beijing, China, Chap. 6–8.
Schiffer, W. , and Jenzer, J. , 2003, “ 3-D Shafting Calculations for Marine Installations: Static and Dynamic,” ASME Paper No. ICES2003-0590.
Jakobsen, S. , 1991, “ Coupling Axial and Torsional Vibration Calculations on Long-Stroke Diesel Engines,” SNAME Trans., 99, pp. 405–419.
Zhang, S. , and Guo, J. , 2010, “ Nonlinear Model of the Propeller and Crankshaft System Coupled in Torsional and Axial Direction,” J. Mech. Eng., 46(11), pp. 121–128. [CrossRef]
O'Reilly, O. , 2001, “ On Coupled Longitudinal and Lateral Vibrations of Elastic Rods,” J. Sound Vib., 27(5), pp. 835–856. [CrossRef]
Banerjee, J. , Guo, S. , and Howson, E. , 1996, “ Exact Dynamic Stiffness Matrix of a Bending-Torsion Coupled Beam Including Warping,” Comput. Struct., 59(4), pp. 613–621. [CrossRef]
Bargis, E. , Garro, A. , and Vullo, V. , 1980, “ Crankshaft Design and Evaluation—Part 1: Critical Analysis and Experimental Evaluation of Current Methods,” The International Conference on Reliability, Stress Analysis and Failure Prevention in Mechanical Design, San Francisco, CA, Aug. 18–21, pp. 191–201.
Okamura, H. , Yamanaka, T. , Sogabe, K. , and Satoh, Y. , 1989, “ Dynamic Stiffness Matrix Method for Three-Dimensional Analysis of Crankshaft Vibrations (2nd Report, Application to Solid Structure Crankshaft Systems and the Influence Due to the Oil Film Stiffness of Crankshaft-Journal Bearing,” Trans. JSME, Part C, 55(516), pp. 1974–982. [CrossRef]
Priebsch, H.-H. , Affenzeller, J. , and Gran, S. , 1995, “ Prediction Technique for Stress and Vibration of Nonlinear Supported, Rotating Crankshafts,” ASME J. Eng. Gas Turbines Power, 115(4), pp. 711–720. [CrossRef]
Mourelatos, Z. , 2001, “ A Crankshaft System Model for Structural Dynamic Analysis of Internal Combustion Engines,” Comput. Constructures, 79(20–21), pp. 2009–2027. [CrossRef]
Bin, T. , 2006, “Study on the Coupled Torsional, Axial and Bending Three-Dimensional Vibrations of Internal Combustion Engine Shafting Based on the Exact Stiffness Matrix Methods,” Ph.D. thesis, Dalian University of Technology, Dalian, China.
Kimura, J. , Kobayashi, S. , Hoshina, K. , Kawase, K. , Matsui, K. , and Yamamoto, A. , 2014, “ Crankshaft Impact Noise and Three-Dimensional Vibration,” SAE Paper No. 2014-01-2863.
Hu, K. , Mourelatos, Z. , and Vlahopoulos, N. , 2003, “ Computational Analysis for Dynamic Response of a Rotating Shaft on Flexible Support Structure With Clearances,” J. Sound Vib., 267(1), pp. 1–28. [CrossRef]
Ebrat, O. , Mourelatos, Z. , and Hu, K. , 2004, “ An Elastohydrodynamic Coupling of a Rotating Crankshaft and a Flexible Engine Block,” ASME J. Tribol., 126(2), pp. 233–241. [CrossRef]
Craig, R. , and Bampton, M. , 1968, “ Coupling of Substructures for Dynamic Analyses,” AIAA J., 6(7), pp. 1313–1319. [CrossRef]
Wei, L. , Duan, S. , and Wei, H. , 2013, “ Thermo-Elasto-Hydrodynamic Behavior of Main Bearings of Marine Diesel Engine in Mixed Lubrication,” Trans. CSICE, 31(2), pp. 183–191.
Krasser, J. , 1996, “Thermo-Elasto-Hydrodynamic Analysis of Dynamically Loaded Journal Bearings,” Ph.D. thesis, Technology University of Graz, Graz, Austria.
Greenwood, J. , and Tripp, J. , 1971, “ The Contact of Nominally Flat Rough Surfaces,” Proc. Inst. Mech. Eng., 185(46), pp. 625–633.
Khonsari, M. , and Wang, S. , 1991, “ On the Fluid-Solid Interaction in Reference to Thermoelastohydrodynamic Analysis of Journal Bearings,” ASME J. Tribol., 113(2), pp. 398–404. [CrossRef]
Sharma, S. , and Kumar, V. , 2003, “ Study of Hole-Entry Journal Bearings System Considering Combined Influence of Thermal and Elastic Effects,” Tribol. Int., 36(12), pp. 903–920. [CrossRef]
Bukovnik, S. , Offner, G. , and Caika, V. , 2007, “ Thermo-Elasto-Hydrodynamic Lubrication Model for Journal Bearing Including Shear Rate-Dependent Viscosity,” Lubr. Sci., 19(4), pp. 231–245. [CrossRef]
Dowson, D. , Hudson, J. , and Hunter, B. , 1966, “ An Experimental Investigation of the Thermal Equilibrium of Steadily Loaded Journal Bearings,” Proc. Inst. Mech. Eng. (Part 3B), 181(2), pp. 70–80.
MAN Group, 2012, “6S50MC-C Engine Selection Guides,” MAN Diesel & Turbo, Copenhagen, Denmark.

Figures

Grahic Jump Location
Fig. 1

Notation of the flexible engine block and the flexible crankshaft interaction

Grahic Jump Location
Fig. 6

Vibration comparison of the free end between the whole flexible and the simply engine block model at 127 r/min. Case 1: not considering the whole engine block flexibility and case 2: considering the whole engine block flexibility.

Grahic Jump Location
Fig. 7

Vibration comparison of the free end between the whole engine block models with or without the temperature effect at 127 r/min. Case 3: not considering the temperature effect and case 4: considering the temperature effect.

Grahic Jump Location
Fig. 8

Comparison of oil film thickness and contact percentage between the models with or without the temperature effect at 127 r/min. Case 3: not considering the temperature effect and case 4: considering the temperature effect; (a, b) for the No.2 bearing and (c, d) for the No.6 bearing.

Grahic Jump Location
Fig. 2

Flow chart of the calculation

Grahic Jump Location
Fig. 3

The engine block and the crankshaft

Grahic Jump Location
Fig. 4

Loads at the crankshaft pins (at 127 r/min)

Grahic Jump Location
Fig. 9

Comparisons of vibration velocity [r. m. s] between the models with or without the temperature effect at different revolution. Case 3: not considering the temperature effect and case 4: considering the temperature effect.

Grahic Jump Location
Fig. 10

(a) Sketch map of axial vibration of crankshaft central points within a cycle and (b) the crankshaft model

Grahic Jump Location
Fig. 11

Torsional vibration of all central points within a cycle

Grahic Jump Location
Fig. 5

Comparison of 3D vibration of free end of the crankshaft

Grahic Jump Location
Fig. 12

The whole bending vibration of the crankshaft

Tables

Errata

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In