Abstract
The present study attempts to analyze the significance of imparted fastening forces, the friction induced and the material of the plates on the fatigue life (Nf) of double-lap bolted joints with the aid of numerical analysis. The three-dimensional FE models of the joints were created and subjected to four distinct fastening forces on the bottom face of the bolt stem and a cyclic load with a constant maximum stress for plates made of Aluminium alloy - Al 2024-T3 and Magnesium alloy - Mg AZ31B. The dispersion of stress and strain in the plates stimulated by the imparted fastening forces and the applied cyclic load was assessed utilizing finite element (FE) method with the help of ANSYS software. The order and the combination of parameters to execute the simulations and to ascertain the main effects were formulated using Taguchi’s L8 array. The outcomes from the FE analyses were utilized to appraise the fatigue lives of the bolted joints using the Smith-Watson-Topper multi-axial fatigue criterion. The outcomes of the FE analysis made clear that the fastening forces and the fatigue life of the joints were positively co-related. The results also revealed the effect of material strength and alloy composition on the fatigue life.
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