On the Variation of Clamping Force in Bolted Double Lap Joints Subjected to Longitudinal Loading: A Numerical and Experimental Investigation

:  This study investigates the variation of clamping force and its concomitant effects on the performance of bolted double lap joints subjected to longitudinal loading. Two different amounts of clamping force were applied to bolted double lap joints made of Aluminium 2024-T3, and variations of clamping force were measured under the application of longitudinal loading. Finite element modelling was also performed to compare with experiments. The results unanimously revealed a gradual initial reduction of clamping force followed by a significant increase as the longitudinal load was increased. Also affected, was the load transfer mechanism in the joint resulting in variation of friction force between the plates, but in a different trend compared to clamping force. Finally, the key parameters have been discussed and highlighted pertaining to the performance of the joint.

[1]  Constantinos Soutis,et al.  Stress and Failure Analysis of Composite Laminates with an Inclusion under Multiaxial Compression-Tension Loading , 2001 .

[2]  Abdelwaheb Amrouche,et al.  Cold expansion effect on the initiation and the propagation of the fatigue crack , 2003 .

[3]  P.M.S.T. de Castro,et al.  Residual stress effect on fatigue striation spacing in a cold-worked rivet hole , 2004 .

[4]  Alain Daidié,et al.  Numerical model for two-bolted joints subjected to compressive loading , 2008 .

[5]  G. Kelly,et al.  LOAD TRANSFER IN HYBRID (BONDED/BOLTED) COMPOSITE SINGLE-LAP JOINTS , 2005 .

[6]  Jeffrey Vogwell,et al.  A novel method of cold expansion which creates near‐uniform compressive tangential residual stress around a fastener hole , 2004 .

[7]  Kyung-Young Jhang,et al.  Estimation of clamping force in high-tension bolts through ultrasonic velocity measurement. , 2006, Ultrasonics.

[8]  Dong-Hyun Kim,et al.  Failure of carbon composite-to-aluminum joints with combined mechanical fastening and adhesive bonding , 2006 .

[9]  Jeffrey Vogwell,et al.  Effect of hole lubrication on the fretting fatigue life of double shear lap joints: An experimental and numerical study , 2009 .

[10]  Zhufeng Yue,et al.  Effect of cold expansion on fatigue performance of open holes , 2008 .

[11]  Joakim Schön,et al.  Local fatigue behaviour of CFRP bolted joints , 2002 .

[12]  Fu-Kuo Chang,et al.  Experimental study on clamping effects on the tensile strength of composite plates with a bolt-filled hole , 1999 .

[13]  Hiroyuki Terada.  Structural fatigue and joint degradation , 2001 .

[14]  Toshimichi Fukuoka,et al.  Evaluations of the Tightening Process of Bolted Joint With Elastic Angle Control Method , 2004 .

[15]  Chu-Hwa Lee,et al.  Finite element modeling of self-loosening of bolted joints , 2007 .

[16]  Onur Sayman,et al.  Experimental failure analysis of mechanically fastened joints with clearance in composite laminates under preload , 2008 .

[17]  Jeffrey Vogwell,et al.  Effect of torque tightening on the fatigue strength of bolted joints , 2006 .

[18]  Krishnakumar Shankar,et al.  Fatigue behaviour of aluminium alloy 7075 bolted joints treated with oily film corrosion compounds , 2002 .

[19]  Hiroshi Kato,et al.  Ultrasonic detection of fretting fatigue damage at bolt joints of aluminum alloy plates , 2009 .

[20]  I. Romanishin.  TOMOGRAPHY OF STRESS TENSOR FIELD BY ACOUSTIC ELASTICITY , 1998 .

[21]  T. N. Chakherlou,et al.  Reduction in clamping force due to applied longitudinal load to aerospace structural bolted plates , 2009 .

[22]  Jeffrey Vogwell,et al.  The effect of bolt clamping force on the fracture strength and the stress intensity factor of a plate containing a fastener hole with edge cracks , 2009 .

[23]  T. N. Chakherlou,et al.  An experimental investigation on the effect of short time exposure to elevated temperature on fatigue life of cold expanded fastener holes , 2008 .

[24]  Jeffrey Vogwell,et al.  The effect of cold expansion on improving the fatigue life of fastener holes , 2003 .

[25]  Jeffrey Vogwell,et al.  Experimental and numerical investigation of the effect of clamping force on the fatigue behaviour of bolted plates , 2008 .

[26]  M. T. Kokaly,et al.  Observations and Analysis of Fatigue Crack Growth from Cold Expanded Holes , 2010 .

[27]  Sayed A. Nassar,et al.  Clamp Load Loss due to Fastener Elongation Beyond its Elastic Limit , 2006 .

[28]  T. N. Chakherlou,et al.  An FE analysis for assessing the effect of short-term exposure to elevated temperature on residual stresses around cold expanded fastener holes in aluminum alloy 7075-T6 , 2010 .

[29]  Jeffrey Vogwell,et al.  Experimental and numerical investigations into the effect of an interference fit on the fatigue life of double shear lap joints , 2009 .

[30]  C. Borsellino,et al.  Adhesive joining of aluminium AA6082: The effects of resin and surface treatment , 2009 .

[31]  B. Dattaguru,et al.  Analysis of a double shear lap joint with interference fit pin , 1995 .