Design & Analysis of Bolt for Normal & Fracture Split Connecting Rod

Paper #:
  • 2017-26-0274

Published:
  • 2017-01-10
DOI:
  • 10.4271/2017-26-0274
Citation:
Kaundabalaraman, K., "Design & Analysis of Bolt for Normal & Fracture Split Connecting Rod," SAE Technical Paper 2017-26-0274, 2017, doi:10.4271/2017-26-0274.
Pages:
8
Abstract:
Proper suitability of bolt preload is a pre-requisite whenever we go for component design change. In this paper we have considered connecting rod bolt for our analysis, where-in the design pre-requisite was whether same tightening specification could be carried forward from normal to fracture split type. The present work focuses on comparison of bolt design parameters, inertia force, contact pressure & bearing pressure calculation. Bolt safety factor was used as a parameter to check for the preload suitability with respect to engine max permissible speed. A systematic approach, considering guidelines from available bolt standard and literature was used for carrying out related analysis. For improving the quality of judgment, FEA tools along with durability testing was carried out at ARAI. In addition to this for better bolt preload control “Angle tightening method” of required specification was proposed, with results validated through physical testing.
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