The Optimization of Piston Groove Diameter Based on ABAQUS

Abstract:

Two factors must be given considered in low friction cylinder , which are sealing and wear. A lower contact pressure can lead to seal failure. However, a heavier contact press can increase friction force and wear. In the present paper a method have been proposed to obtain the optimal contact pressure between PTFE wear-resistant ring and the steel bushing at first, with analysis of the relationship among the surface roughness, the sealing contact pressure and the leakage. Secondly,the piston groove Diameter has been designed by using the finite element analysis software of ABAQUS to simulate the Mooney-Rivlin model, which is corresponding to this optimal contact pressure. On the premise of meeting the requirement of the specific leakage standard between the cylinder and the wear-resistant ring, the optimal contact pressure and the corresponding piston groove size have been obtained, with different surface roughnesses of the friction pairs.

• Periodical: Applied Mechanics and Materials (Volumes 397-400)
• Pages: 1045-1049
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.397-400.1045
• Online since: September 2013
• Authors: Sheng Guan Qu, Wen Long Li, Bin Li
• Keywords: ABAQUS, Contact Pressure, Finite Element (FE) Simulation, Friction, Leakage, Piston Groove Diameter, Seal, Surface Roughness (SR)

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