This study develops an analytical formula for determining the minimum initial preload required to prevent the self-loosening of preloaded countersunk fasteners that are subjected to cyclic transverse loading. The formula is based on mathematical modeling of the self-loosening behavior of the fastener. The accurate prediction of the minimum bolt preload required for preventing loosening would reliably enable the use of that minimum threshold preload as a primary locking feature in critical bolted joint applications. An experimental setup and test procedure is established to compare the model prediction with the experimental data. The focus of this paper is to investigate the effect of thread pitch, excitation amplitude, as well as the bearing friction coefficient on the threshold value of the bolt preload that would prevent loosening.
Skip Nav Destination
ASME 2011 Pressure Vessels and Piping Conference
July 17–21, 2011
Baltimore, Maryland, USA
Conference Sponsors:
- Pressure Vessels and Piping Division
ISBN:
978-0-7918-4452-6
PROCEEDINGS PAPER
Criterion for Preventing Self-Loosening of Preloaded Countersunk Head Threaded Fasteners Available to Purchase
Amro M. Zaki,
Amro M. Zaki
Oakland University, Rochester, MI
Search for other works by this author on:
Sayed A. Nassar,
Sayed A. Nassar
Oakland University, Rochester, MI
Search for other works by this author on:
Xianjie Yang
Xianjie Yang
Oakland University, Rochester, MI
Search for other works by this author on:
Amro M. Zaki
Oakland University, Rochester, MI
Sayed A. Nassar
Oakland University, Rochester, MI
Xianjie Yang
Oakland University, Rochester, MI
Paper No:
PVP2011-57385, pp. 369-380; 12 pages
Published Online:
May 21, 2012
Citation
Zaki, AM, Nassar, SA, & Yang, X. "Criterion for Preventing Self-Loosening of Preloaded Countersunk Head Threaded Fasteners." Proceedings of the ASME 2011 Pressure Vessels and Piping Conference. Volume 2: Computer Technology and Bolted Joints. Baltimore, Maryland, USA. July 17–21, 2011. pp. 369-380. ASME. https://doi.org/10.1115/PVP2011-57385
Download citation file:
37
Views
Related Proceedings Papers
Related Articles
Effect of Thread and Bearing Friction Coefficients on the Self-Loosening of Preloaded Countersunk-Head Bolts Under Periodic Transverse Excitation
J. Tribol (July,2010)
Effect of Conical Angle and Thread Pitch on the Self-Loosening Performance of Preloaded Countersunk-Head Bolts
J. Pressure Vessel Technol (April,2012)
Effect of Thread Pitch and Initial Tension on the Self-Loosening of Threaded Fasteners
J. Pressure Vessel Technol (November,2006)
Related Chapters
Performance of Aged Asphalt Shingles and Development of Climate-Dependent Durability Index
Roofing Research and Standards Development: 10th Volume
Preferred Numbers
Metric Standards for Worldwide Manufacturing, 2007 Edition
Fasteners
Metric Standards for Worldwide Manufacturing, 2007 Edition