Plane stress yield function for aluminum alloy sheets—part II: FE formulation and its implementation

By Jeong Whan Yoon, Frederic Barlat, R. Dick, K. Chung, T. Kang. 2004

309 citations recorded by the source corpus.

Abstract A recently proposed plane stress yield function [Yld2000-2d; Int. J. Plasticity 19 (2003) 1297—part I of this work] that well describes the anisotropic behavior of aluminum alloy sheets was implemented in a finite element code. A short review of the Yld2000-2d relevant features was provided and the complete formulation for the yield function implementation was proposed for its convenient use. Yield surface shapes, yield stress and r-value directionalities predicted with Yld2000-2d for Al–5 wt.% Mg and 6016-T4 alloy sheet samples were compared with those of previously suggested yield functions. Simulations of the cup drawing process for the Al–Mg binary sheet were performed to compute the cup height profiles (earing profiles) with different yield functions. The predicted profiles were compared to experimental data and it was shown that the simulation using Yld2000-2d led to the best agreement between theoretical and experimental results. The drawing and redrawing processes of a circular cup using the NUMISHEET'99 (Gelin, J.C., Picart, P., 1999. In: Gelin, J.C., Picart, P. (Eds.), Proceedings of NUMISHEET'99, Vol. 2. 13–17 September, Besancon, France) conference geometry and specifications for a 6111-T4 aluminum alloy sheet sample were also simulated. The predicted load-punch displacement curves and sheet thickness profiles along different radial directions of the cup were shown to be in excellent agreement with experimental data.

Subfields: Materials Chemistry, Mechanical Engineering, Mechanics of Materials

View Paper: https://www.semanticscholar.org/paper/14d21c8bccdcc0e36beeed63068bc351dc24dd67

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In Materials Chemistry

In Mechanical Engineering

In Mechanics of Materials

Citations in the corpus

Advances in anisotropy and formability (2010, unknown): “[303–305]; Plunkett et al.”
Forming of aluminum alloys at elevated temperatures ¿ Part 2: Numerical modeling and experimental verification (2006, background): “Under this scheme, the strain increments in the flow formulation are the discrete true (or logarithmic) strain increments, and the material rotates by the incremental angle obtained from the polar decomposition at each discrete step ( Yoon et al., 2004 ).”