吉林大学学报(工学版)

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ALE finite element simulation of oil storage lubrication mechanism on bionic nonsmooth micro-pits in piston surface

Yang Hong-xiu1;Zuo Wen-jie2;Li Yi-wen2; Ren Lu-quan1   

  1. 1.Key Laboratory for TerrainMachine Bionics of Engineering, Ministry of Education, Jilin University, Changchun 130022,China；2.College of Mechanical Science and Engineering, Jilin University, Changchun 130022,China
  • Received:2007-08-27 Revised:2007-09-27 Online:2008-05-01 Published:2008-05-01

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Abstract: An arbitrary LagrangeEuler(ALE) finite element method was introduced to build a mathematical model to trace the sloshing of the lubricating oil in the micropits on the piston surface to help understanding the oil storage mechanism of the bionic nonsmooth surface. The free surface profile and the pressure cloud diagram of the lubricating oil sloshing were simulated by the nonlinear finite element solver LSDYNA, demonstrating intuitively the whole dynamic process of the lubricating oil sloshing in the nonsmooth micropit. The lubricating capability of the hemisphere, taper, and cuniform oil storage micropits were simulated compuratively and the result showed that the lubricating capaqility of the cuniform micropit is the best, being in agreement with the experiment.

Key words: engineering bionics, bionic nonsmooth, piston lubrication, arbitrary LagrangeEuler(ALE) finite element method

CLC Number: 

  • TB17
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