Finite Element Analysis of Contact Behavior Characteristics in LPG Filling Unit Depending on Multi-ball/Cylinder Rolling Friction Motions

LPG 충전기에서 다수 볼-실린더의 구름마찰운동에 따라 달라지는 접촉거동특성에 관한 유한요소해석

  • Kim Chung-Kyun (Department of Mechanical and System Design Engineering, Hongik University)
  • 김청균 (홍익대학교 기계.시스템디자인공학과)
  • Published : 2006.06.01


In this paper, the contact stress and friction force between multi-balls and rolling friction contact surfaces of two cylinders have been presented using a finite element analysis. The multi-balls for a rolling friction motion may be contacted with a reciprocating mechanism of a parallel cylinder and a misaligned cylinder in a LPG filling unit. The FEM computed results indicate that SiC ceramic and SUS 304 balls show a high contact stress and friction force on the contact spot of rolling balls. But the PEEK balls show a low contact stress and friction loss due to a high flexibility of a PEEK polymer. In this study, we may recommend SiC and SUS 304 balls for high compressive loadings between a multi-ball and a cylinder contact mechanisms and PEEK balls for a low compressive force. And the misalignment between two cylinders should be restricted for a low contact stress and friction loss, especially.