An analytical method is presented for simulating piston secondary dynamics and piston-bore contact for an asymmetric half piston model including EHD lubrication at the bore-skirt interface. The Reynolds equation is solved using finite differences and a successive over-relaxation algorithm. The analysis accounts for bore distortion effects due to mechanical and thermal deformation, inertia loading and piston barrelity and ovality. A Newmark-Beta time integration scheme is used combined with a Newton-Raphson linearization. The EHD behavior is coupled with a piston-bore contact algorithm and the piston secondary dynamics. Results demonstrate the importance of coupling among skirt friction, lubrication and secondary motion.
- Tribology Division
Piston Secondary Dynamics Considering Elastohydrodynamic Lubrication and Skirt Friction
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Shah, P, Mourelatos, ZP, & Patel, P. "Piston Secondary Dynamics Considering Elastohydrodynamic Lubrication and Skirt Friction." Proceedings of the STLE/ASME 2006 International Joint Tribology Conference. Part A: Tribomaterials; Lubricants and Additives; Elastohydrodynamic Lubrication; Hydrodynamic Lubrication and Fluid Film Bearings; Rolling Element Bearings; Engine Tribology; Machine Components Tribology; Contact Mechanics. San Antonio, Texas, USA. October 23–25, 2006. pp. 255-256. ASME. https://doi.org/10.1115/IJTC2006-12320
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