Thermomechanical Fatigue Life Prediction for a Marine Diesel Engine Piston considering Ring Dynamics | Zendy

He Tao | Zendy; Lu Xiqun | Zendy; Zou Dequan | Zendy; Guo Yibin | Zendy; Li Wanyou | Zendy; Huang Minli | Zendy

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Thermomechanical Fatigue Life Prediction for a Marine Diesel Engine Piston considering Ring Dynamics

Author(s) -

He Tao,

Lu Xiqun,

Zou Dequan,

Guo Yibin,

Li Wanyou,

Huang Minli

Publication year - 2014

Publication title -

advances in mechanical engineering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.318

H-Index - 40

ISSN - 1687-8132

DOI - 10.1155/2014/429637

Subject(s) - piston ring , lubrication , piston (optics) , finite element method , diesel engine , materials science , diesel fuel , thermal , thermal analysis , ring (chemistry) , mechanical engineering , mechanics , structural engineering , automotive engineering , engineering , composite material , thermodynamics , physics , chemistry , organic chemistry , wavefront , optics

A newly designed marine diesel engine piston was modeled using a precise finite element analysis (FEA). The high cycle fatigue (HCF) safety factor prediction procedure designed in this study incorporated lubrication, thermal, and structure analysis. The piston ring dynamics calculation determined the predicted thickness of lubrication oil film. The film thickness influenced the calculated magnitude of the heat transfer coefficient (HTC) used in the thermal loads analysis. Moreover, the gas pressure of ring lands and ring grooves used in mechanical analysis is predicted based on the piston ring dynamics model.

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