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.
赵俊生，李正文，李涵，白金霖， 章朝栋. 曲轴三维耦合振动特性与非线性参数的影响研究[J]. 振动与冲击, 2020, 39(12): 198-205.
ZHAO Junsheng,LI Zhengwen,LI Han,BAI Jinlin,ZHANG Chaodong. A study on the three-coupled vibration of the crankshaft and the effects of nonlinear parameters. JOURNAL OF VIBRATION AND SHOCK, 2020, 39(12): 198-205.
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