Theoretical and Experimental Investigation on Mechanical Behavior of Aluminum to Aluminum Tubular Bonded Lap Joint under Pure Torsion and a Finite Element Comparison with Hybrid Rivet/Bonded Joint

Document Type: Research Paper

Authors

1 Department of Mechanical Engineering, University of Birjand, Birjand, Iran

2 Department of Material Engineering, Malek Ashtar University of Technology, Tehran, Iran

Abstract

The combination of mechanical and bonded joints creates a new connection type, called hybrid joint which has the benefits of both mechanical and bonded joints. In this research, the mechanical behavior of the tubular bonded lap joint between aluminum tubes subjected to pure torsion has been investigated experimentally and numerically, and the results have been compared. The mechanical behavior of the hybrid (rivet/bonded) joint has been investigated numerically and the outcomes have been compared. The adhesive and rivets have cohesive elements and bushing connector elements, respectively. The results from the hybrid joints and the damage mechanism show that the rivets change the interface shear stress and the stress distribution of the joint, and affect the joint’s torque capacity and strengths. It has been observed that for specimens with overlap lengths close to effective length, the hybrid joint is more effective.

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Main Subjects

[1] Sevkat, E., Tumer, H., Kelestemur, M.H., Dogan, S., Effect of torsional strain-rate and lay-up sequences on the performance of hybrid composite shafts, Materials & Design, 60, 2014, 310-9.

[2] Shishesaz, M., Tehrani, S., The effects of circumferential voids or debonds on stress distribution in tubular adhesive joints under torsion, The Journal of Adhesion, 2019, 1-35.

[3] Aimmanee, S., Hongpimolmas, P., Stress analysis of adhesive-bonded tubular-coupler joints with optimum variable-stiffness composite adherend under torsion, Composite Structures, 164, 2017, 76-89.

[4] Esmaeili, F., Zehsaz, M., Chakherlou, T., Barzegar, S., Fatigue life estimation of double lap simple bolted and hybrid (bolted/bonded) joints using several multiaxial fatigue criteria, Materials & Design, 67, 2015, 583-95.

[5] Gómez, S., Onoro, J., Pecharroman, J., A simple mechanical model of a structural hybrid adhesive/riveted single lap joint, International journal of Adhesion and Adhesives, 27, 2007, 263-7.

[6] Adams, R., Peppiatt, N., Stress analysis of adhesive bonded tubular lap joints, The Journal of Adhesion, 9, 1977, 1-18.

[7] Chen, D., Cheng, S., Torsional stress in tubular lap joints, International Journal of Solids and Structures, 29, 1992, 845-53.

[8] Reedy, E., Guess, T.R., Composite-to-metal tubular lap joints: strength and fatigue resistance, International Journal of Fracture, 63, 1993, 351-67.

[9] Hosseinzadeh, R., Cheraghi, N., Taheri, F., An engineering approach for design and analysis of metallic pipe joints under torsion by the finite element method, The Journal of Strain Analysis for Engineering Design, 41, 2006, 443-52.

[10] Hosseinzadeh, R., Taheri, F., Non-linear investigation of overlap length effect on torsional capacity of tubular adhesively bonded joints, Composite Structures, 91, 2009, 186-95.

[11] Das, R., Pradhan, B., Adhesion failure analyses of bonded tubular single lap joints in laminated fibre reinforced plastic composites, International Journal of Adhesion and Adhesives, 30, 2010, 425-38.

[12] Ouyang, Z., Li, G., Cohesive zone model based analytical solutions for adhesively bonded pipe joints under torsional loading, International Journal of Solids and Structures, 46, 2009, 1205-17.

[13] Hipol, P.J., Analysis and optimization of a tubular lap joint subjected to torsion, Journal of Composite Materials, 18, 1984, 298-311.

[14] Chon, C.T., Analysis of tubular lap joint in torsion, Journal of Composite Materials, 16, 1982, 268-84.

[15] Doubrava, R., Effect of mechanical properties of fasteners on stress state and fatigue behaviour of aircraft structures as determined by damage tolerance analyses, Procedia Engineering, 101, 2015, 135-42.

[16] Skorupa, A., Skorupa, M., Riveted lap joints in aircraft fuselage: design, analysis and properties, Springer Science & Business Media, 2012.

[17] Thechnical datasheet of SUPER SPECIAL adhesive, Gaffari Chemical Industrial Co., 2005.