Closed-Form Structural Stress Solutions for Fatigue Life Estimations of Flow Drill Screw Joints in Lap-Shear Specimens of Aluminum 6082-T6 Sheets

Paper #:
  • 2017-01-0470

Published:
  • 2017-03-28
Pages:
6
Abstract:
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.
Also in:
  • SAE International Journal of Materials and Manufacturing - V126-5EJ
  • SAE International Journal of Materials and Manufacturing - V126-5
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