|About this Abstract
||NUMIFORM 2019: The 13th International Conference on Numerical Methods in Industrial Forming Processes
||S-01: Modeling of the Anisotropic Behavior in Plasticity
||Material Modeling and Forming Limit Analysis of 6016-T4 Aluminum Alloy Sheet
||Yu Ogasawara, Tomoyuki Hakoyama, Hiroki Takeda, Toshihiko Kuwabara, Frédéric Barlat
|On-Site Speaker (Planned)
This study investigates the material modeling and forming limit analysis of a 6016-T4 aluminum alloy sheet. Servo-controlled biaxial tensile tests using both cruciform and tubular specimens are performed for many linear stress paths in the first quadrant of stress space. The shapes of plastic work contours slightly change with plastic work while the direction of the plastic strain rate is almost constant for each linear stress path. Appropriate parameters and exponent of the Yld2000-2d yield function (Barlat et al., 2003) are determined so that it can reproduce the biaxial deformation behavior of the test material. Moreover, using the Marciniak–Kuczyński approach (Marciniak and Kuczyński, 1967), the material model is used to calculate the forming limit curve (FLC), forming limit stress curve (FLSC), and Forming limit plastic work (FLPW) for the linear stress paths. The calculated FLC, FLSC and FLPW are compared with the measured ones to discuss the effect of material models on the predictive accuracy of the forming limit analysis.