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Experimental and Numerical Study of the Fatigue Strength of Double Lap Bolted Joints and the Effect of Torque Tightening on the Fatigue Life of Jointed Plates

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Abstract

In this research, the effects of clamping force on the fatigue life of 2024-T3 aluminum alloy double lap bolted joints have been studied experimentally and numerically. To do so, three sets of the specimens were prepared and each subjected to torque of 1, 2.5 and 5 N m and then fatigue tests were carried out under different cyclic longitudinal load levels. In the numerical method, finite element ANSYS code was used to obtain stress distribution in connection plates due to clamping force and longitudinal applied loads. Numerical simulation and experimental results revealed that the fatigue life of double lap bolted joints were improved by increasing the clamping force due to compressive stresses which appeared around the hole.

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Authors and Affiliations

  1. Faculty of Mechanical Engineering, University of Tabriz, P.O. Box 51666-14766, Tabriz, Iran

    F. Esmaeili, M. Zehsaz, T. N. Chakherlou & S. Hasanifard

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  1. F. Esmaeili
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  2. M. Zehsaz
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  3. T. N. Chakherlou
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  4. S. Hasanifard
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Correspondence to F. Esmaeili.

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Esmaeili, F., Zehsaz, M., Chakherlou, T.N. et al. Experimental and Numerical Study of the Fatigue Strength of Double Lap Bolted Joints and the Effect of Torque Tightening on the Fatigue Life of Jointed Plates. Trans Indian Inst Met 67, 581–588 (2014). https://doi.org/10.1007/s12666-014-0385-8

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  • DOI: https://doi.org/10.1007/s12666-014-0385-8

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