基于CEL算法的发动机润滑液瞬态振荡过程可视化研究

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摘要发动机润滑液瞬态振荡过程属于复杂的流固耦合问题，文中建立了曲轴-油底壳-润滑油流固耦合模型，采用耦合的欧拉-拉格朗日(CEL)算法分析了车辆在启动、加速、制动和转向工况下的润滑油振荡响应，并对瞬态振荡过程进行了可视化，得到各个时刻润滑油的真实振荡情况；对CEL方法的有限元建模、体积分数处理作了分析与探讨,在此基础上对液体震荡情况下油底壳壁面进行了动态响应分析,得到了油底壳应力响应时间历程，结果表明在液体震荡的情况下，油底壳壁面应力曲线会出现尖刺现象，这对整机的NVH性能有很大影响。该结果对发动机设计中如何实现瞬态液体振荡过程的可视化和降低噪声有实际意义。

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关键词 ： CEL算法；润滑液；振荡过程；可视化, 响应

Abstract：Engine lubricating fluid transient oscillation process is a complex fluid solid coupling problem ,this paper establishes the coupling model of crankshaft-oil sump-lubricating oil and analyzes the transient sloshing response of the lubricant by using the coupled Euler Lagrange (CEL) algorithm of the vehicle during starting, acceleration, braking and steering working condition and discusses the finite element modeling, the volume fraction treatment of CEL method .moreover ,on the basis of the liquid shock analyzing case, the dynamic response of oil sump shell has been analyzed and discussed, the results show that under the liquid sloshing conditions, the oil pan wall stress curve will appear a phenomenon, it has a great impact on the performance of NVH. The results are of practical significance to realize the visualization of transient liquid oscillation process and reduce the noise during engine design process.

Key words： CEL algorithm, Lubricant, vibration and oscillation visualization, respons

收稿日期: 2016-07-20 出版日期: 2017-12-28

引用本文:

马子远,俞小莉,黄钰期,刘震涛，黄瑞. 基于CEL算法的发动机润滑液瞬态振荡过程可视化研究[J]. 振动与冲击, 2018, 37(1): 72-76.
Maziyuan Yuxiaoli Huangyuqi Huangrui. CEL algorithm-based visualization simulation of transient oscillation of engine lubricant. JOURNAL OF VIBRATION AND SHOCK, 2018, 37(1): 72-76.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2018/V37/I1/72

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