Fracture Behavior Modeling of 6061-T6 Aluminum Alloy Sheet Using a Phenomenological Failure Criterion

Document Type : Mechanics article

Author

Department of Materials and Manufacturing, University of Mohaghegh Ardabili, Adabil, Iran

Abstract

Developing the necessary tools to predict the plastic behavior and failure of sheet metal is one of the important issues in the field of sheet metal forming. In this research, the fracture behavior of the 6061-T6 aluminum alloy sheet has been analyzed and investigated using experimental uniaxial tensile tests as well as numerical simulation in Abaqus software. To investigate the failure behavior, the new Quach phenomenological fracture model was coded using the VUSDFLD subroutine and introduced to the Abaqus. Three different geometries have been designed and used in experimental tests and numerical simulations to determine the material constants of the criterion. The results show that the designed geometries create a wide range of triaxial stress and Lode parameters. With the experimental-numerical hybrid method and the minimization of the defined error function, the fracture model was calibrated for the 6061-T6 aluminum sheet. Also, using the calibrated fracture model, the failure in the tensile test of a newly designed geometry was evaluated. The results show a close agreement between the predicted fracture height and fracture location compared to the experimental observations.

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Volume 23, Special Issue 81
Celebrating the 50th Anniversary of Semnan University- In Progress
July 2025
Pages 33-48
  • Receive Date: 24 July 2024
  • Revise Date: 22 October 2024
  • Accept Date: 03 December 2024