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Finite Element-Based Fatigue Assessment of Engine Connecting-Rod Bolts  

Cho, Sung-San (Department of Mechanical & System Design Engineering, Hongik University)
Chang, Hoon (Hyundai Motor Company)
Lee, Kyung-Woo (Hyundai Motor Company)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.16, no.4, 2008 , pp. 14-20 More about this Journal
Abstract
Fatigue fracture of engine connecting-rod bolts is encountered frequently during the developement of high-speed engines. Only the engine dyno test is a currently reliable fatigue durability assessment method. It is because the available rig tests cannot mimic the engine running condition completely, and because the finite element analysis cannot provide realistic stresses near the bolt thread that is modeled as a cylinder. This paper introduces a methodology to assess the fatigue durability of the connecting-rod bolts using the finite element analysis. The methods to contruct the bolt model, to extract the critical bolt stresses for the fatigue analysis, and to obtain the bolt fatigue endurance limit experimentally are discussed. Reliability of the method is verified indirectly.
Keywords
Engine connecting-rod bolt; Finite element analysis; Fatigue; Endurance limit; Bolt preload;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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