Applied-load-dependent evolutions of local gross- and net-section stress fields in aluminum and steel lap shear joints are examined in order to identify and define transitions between the frictional and bearing modes of load support. An airframe-type structural geometry is analyzed with an experimentally and numerically validated finite element model. Slip-resistant joints utilize fastener clamping to enhance frictional load support at panel-panel and bolt head-panel interfaces and postpone loading at fastener/panel-hole interfaces (bearing). In this work, nominal clamping strains of 0% and 0.5% are considered. Calculations without and with friction (μ = 0.2 and 0.4) are performed in order to separate effects of mechanical springback and friction on the transitions. The effective clamping is found to be only about one-third the nominal value.
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ASME/JSME 2004 Pressure Vessels and Piping Conference
July 25–29, 2004
San Diego, California, USA
Conference Sponsors:
- Pressure Vessels and Piping Division
ISBN:
0-7918-4673-3
PROCEEDINGS PAPER
Clamping and Failure Mode Transitions in Structural Shear Joints
G. T. Hahn,
G. T. Hahn
Vanderbilt University, Nashville, TN
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C. A. Rubin
C. A. Rubin
Vanderbilt University, Nashville, TN
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K. Iyer
University of Texas, Austin, TX
G. T. Hahn
Vanderbilt University, Nashville, TN
C. A. Rubin
Vanderbilt University, Nashville, TN
Paper No:
PVP2004-2616, pp. 1-9; 9 pages
Published Online:
August 12, 2008
Citation
Iyer, K, Hahn, GT, & Rubin, CA. "Clamping and Failure Mode Transitions in Structural Shear Joints." Proceedings of the ASME/JSME 2004 Pressure Vessels and Piping Conference. Analysis of Bolted Joints. San Diego, California, USA. July 25–29, 2004. pp. 1-9. ASME. https://doi.org/10.1115/PVP2004-2616
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