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| A study on the three-coupled vibration of the crankshaft and the effects of nonlinear parameters |
| ZHAO Junsheng,LI Zhengwen,LI Han,BAI Jinlin,ZHANG Chaodong |
| School of Mechanical Engineering, North University of China, Taiyuan 030051, China |
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Abstract For the aggravated torsion, bending and axial vibration of crankshaft, a 12V150 diesel crankshaft vibration calculation model which based on the elastic crankshaft and bearing deformation and hydrodynamic lubrication was established. The dynamic response of the crankshaft main journal and the coupling relationship was analyzed. Then designed the orthogonal analysis considering inertia of the flywheel, radius of main bearing clearance, balance rate, width of main bearing and the influence of oil supply pressure, and put forward the improvement scheme. The results show that there is a strong coupling effect between the three dimensional vibration and the main journal. The rotational inertia of the flywheel and the radius clearance of the main bearing have great influence on the vibration in all directions. The width and balance ratio of the main bearing have different effects, and the influence of oil supply pressure is small. The results are helpful to the prediction of three-coupled vibration and the design of vibration reduction of crankshaft in diesel engine strengthening process.
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Received: 08 January 2019
Published: 15 June 2020
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[1] GOMES, JOAO, GAIVOTA. Failure analysis of crankshafts used in maritime V12 diesel engines[J]. Engineering Failure Analysis, 2018, 92: 466-479.
[2] 李渤仲, 宋天相, 宋希庚. 活塞式发动机轴系耦合振动问题(一)——扭转振动引起的轴向振动[J]. 内燃机学报, 1989,7(1):1-6.
LI Bozhong, SONG Tianxiang, SONG Xigeng. On coupled vibrations of reciprocating engine shaft systems(Part 1) axial vibration caused by torsional vibration[J]. Transactions of Csice, 1989,7(1): 1-6.
[3] 宋天相, 王义, 宋希庚, 等. 长行程船用柴油机轴系轴向振动特性的分析[J]. 大连理工大学学报, 1995,35(3): 367-370.
SONG Tianxiang, WANG Yi, SONG Xigeng, et al. Analysis of characteristic of axial vibration in low-speed long-stroke marine engine[J]. Journal of Dalian University of Technology, 1995,35(3): 367-370.
[4] 吕兴才. 内燃机轴系扭转/弯曲/纵向振动的研究与控制[D]. 天津: 天津大学, 2001.
LV Xingcai. Study and control of torsion/bending/longitudinal vibration of internal combustion engine shafts[D]. Tianjin: Tianjin university,2001.
[5] 舒歌群, 吕兴才. 高速柴油机曲轴扭转-纵向耦合振动的研究[J]. 兵工学报, 2002,23(1):1-5.
SHU Gequn, LV Xingcai. Coupled torsional-axial vibration of the crankshaft for a high speed diesel engine[J]. Acta Armamentarii, 2002,23(1):1-5.
[6] 梁兴雨, 舒歌群, 卫海桥, 等. 基于瑞利法的内燃机曲轴扭纵耦合振动[J]. 机械工程学报, 2006,42:183-187.
LIANG Xingyu, SHU Gequn, WEI haiqiao, et al. Coupled torsional-axial vibration of the crankshaft based on rayleigh differential method[J]. Chinese Journal of Mechanical Engineering, 2006,42:183-187.
[7] 朱汉华, 张绪猛, 刘正林, 等. 润滑耦合下冲击引起的轴系弯扭振动特性分析[J]. 船舶力学, 2010,14(1-2): 126-131.
ZHU Hanhua, ZHANG Xumeng, LIU Zhenglin, et al. Analysis on the property of ship shafting bending-torsion vibration coupling with bearing lubrication under impulse load[J]. Journal of Ship Mechanics, 2010,14(1-2): 126-131.
[8] 唐斌. 基于精确动态刚度矩阵法的内燃机轴系扭转、纵向及弯曲三维耦合振动研究[D]. 大连:大连理工大学, 2006:17-38.
TANG Bin. Study on the coupled torsional, axial and bending three-dimensional vibrations of internal combustion engine shafting basing on exact dynamic stiffness matrix methods[D]. Dalian: Dalian University of Technology, 2006:17-38.
[9] 张政, 郑建荣. 变刚度曲轴弯扭耦合振动分析[J]. 机械设计与制造, 2017,06:189-193.
ZHANG Zheng, ZHENG Jianrong. Research for bending-torsion coupling vibration of a variable stiffness crankshaft system[J].Machinery Design Manufacture, 2017,06:189-193.
[10] HU K, MOURELATOS Z.P, VLAHOPOULOS N. Computational analysis for dynamic response of a rotating shaft on flexible support structure with clearances[J]. Journal of Sound and Vibration, 2003,267: 1–28.
[11] JOUJI K, SHINICHIRO K, et al. Crankshaft impact noise and three-dimensional vibration[R]. SAE,2014-01-2863,2014.
[12] 马星国, 尤小梅, 闻邦椿. 基于虚拟样机技术的曲轴多体动力学仿真[J]. 振动与冲击, 2008, 27(9): 155-157.
MA Xingguo, YOU Xiaomei, WEN Bangchun. Multi-body dynamics simulation for a crankshaft system based on virtual prototype technology[J]. Journal of Vibration and Shock, 2008, 27(9): 155-157.
[13] 周玮. 高速大功率柴油机曲轴动态特性及轴承润滑性能仿真分析研究[D]. 北京:北京理工大学, 2016.
ZHOU Wei. Research on simulation analysis of dynamic characteristics and bearing lubrication performance of high speed and heavy duty diesel engine crankshaft[D]. Beijing: Beijing Institute of Technology, 2016.
[14] OMIDREZA E. MOURELATOS Z.P. HU K. et al. An Elastohydrodynamic Coupling of a Rotating Crankshaft and a Flexible Engine Block[J]. Journal of Tribology, 2004,26:233-241.
[15] PATIR N，CHENG H.S. Application of average flow model to lubrication between rough sliding surfaces[J]. Journal of Lubrication Technology, 1979, 101(2): 220-230.
[16] 魏立队, 段树林, 邢辉, 等. 船舶柴油机主轴承热弹性流体动力混合润滑分析[J]. 内燃机学报，2013, 31(2):183-191.
WEI Lidui, DUAN Shulin, XING Hui, et al. Thermom-elastohydrodynamic behavior of main bearings of marine diesel engines in mixed lubrication[J]. Transactions of CSICE, 2013, 31(2): 183-191.
[17] GREENWOOD J. A. TRIPP J. H. The contact of nominally flat rough surface[J]. Proceedings of the Institution of Mechanical Engineers, 1970, 185(46): 625-633.
[18] 陆际清.汽车发动机设计[M]. 北京:清华大学出版社, 1993.
[19] 何为, 薛卫东, 唐斌. 优化试验设计方法及数据分析[M]. 北京:化学工业出版社, 2012.
[20] 张俊红, 张桂昌, 何振鹏, 等. 基于正交试验和神经网络的轴系主轴承润滑特性优化[J]. 内燃机学报, 2011,29(5):461-467.
ZHANG Junhong, ZHANG guichang, HE zhenpeng, et al. Optimization of crankshaft-bearing lubricating characteristics based on orthogonal experiment and neural network[J]. Transactions of CSICE, 2011,29(5): 461-467.
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