Mechanical Analysis for AL5052 Joined by Mechanical Clinching

Abstract

Abstract. This paper conducts correctly the mechanical analysis of joints by clinching for various values of module and process parameter. The force of tensile and shearing of the joint by clinching in AL5052 sheets were analyzed; the theoretical calculation formulas of the shearing and tensile force were deduced based on plastic forming principle. Then the clinching process was carried out by FEM simulation and experiment; the joint strength was obtained by shearing and tensile test. The results of strength tests of the joint were consistent with those obtained for theoretical calculation.

Data-Based and Analytical Models for Strength Prediction of Mechanical Joints

“…In the approaches by Chan Joo Lee et al [9] (Eq. 2) and He et al [10] (Eq. 3), the bottom part of the clinch was not considered.…”

“…Left) Tube section used by Chan-Joo Lee et al [9] and Y. He et al [10] Right) Tube section with the additional rod section used by Coppieters et al [22] Because the diameter of the punch used for clinching is much smaller than in a tube sinking process, the assumption of tn << d is questionable. He and co-workers [10] ignore this assumption leading to Eq.…”

“…3. To avoid the need for FEA-data, He et al [10] estimate the stress based on the adopted hardening law (Swift). It must be noted that He et al [10] employ an estimation of the engineering strain within the joint to arrive at the true stress, which is again questionable.…”

“…To calculate the lap shear strength, He et al [10] and Coppieters et al [12] use the von Mises criterion to convert the yield stress to the shear yield stress. Coppieters (Eq.…”