Closed-form structural stress solutions are investigated for fatigue life estimations of flow drill screw (FDS) joints in lap-shear specimens of aluminum 6082-T6 sheets with and without clearance hole based on three-dimensional finite element analyses. The closed-form structural stress solutions for rigid inclusions under counter bending, central bending, in-plane shear and in-plane tension are first presented. Three-dimensional finite element analyses of the lap-shear specimens with FDS joints without and with gap (with and without clearance hole) are then presented. The results of the finite element analyses indicate that the closed-form structural stress solutions are quite accurate at the critical locations near the FDS joints in lap-shear specimens without and with gap (with and without clearance hole) for fatigue life predictions. The fatigue life predictions based on the closed-form and computational structural stress solutions are in agreement with the experimental results for FDS joints in lap-shear specimens without and with gap (with and without clearance hole) under high-cycle fatigue loading conditions.
Closed-Form Structural Stress Solutions for Fatigue Life Estimations of Flow Drill Screw Joints in Lap-Shear Specimens of Aluminum 6082-T6 Sheets
Sae Int. J. Mater. Manf
Sae International Journal of Materials and Manufacturing
WCX™ 17: SAE World Congress Experience ; 2017
Sae International Journal of Materials and Manufacturing ; 10 , 2 ; 154-159
2017-03-28
6 pages
Aufsatz (Konferenz)
Englisch
Fatigue Evaluation of Flow Drill Screw Joints Using the Equilibrium-Based Structural Stress Method
SAE Technical Papers | 2020
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