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FEM Analysis on Creep Deformation and Axial Bolt Force Change in Threaded Fasteners at Elevated Temperature

[+] Author Affiliations
Yuya Omiya, Masahiro Fujii, Haruka Yamamoto

Okayama University, Okayama, Japan

Tadatoshi Watanabe

Mazda Motor Corporation, Hiroshima, Japan

Paper No. IMECE2016-67381, pp. V002T02A084; 8 pages
doi:10.1115/IMECE2016-67381
From:
  • ASME 2016 International Mechanical Engineering Congress and Exposition
  • Volume 2: Advanced Manufacturing
  • Phoenix, Arizona, USA, November 11–17, 2016
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5052-7
  • Copyright © 2016 by ASME

abstract

In this study, the creep deformation in the threaded joint are discussed using a finite element method, and evaluated the influence of the dimensions of bolt and clamped parts. The stress and creep strain distributions are calculated using the Finite Element Analysis. The occurrence and the propagation of the creep deformation and influence of the creep deformation on the axial bolt force were discussed. It was found that the creep deformation occurred at the bearing surfaces and the engagement screw thread mainly at the elevated temperature. The creep deformation was a cause of the reduction in axial bolt force.

Copyright © 2016 by ASME

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