1. Flange Wrinkling in Deep-Drawing: Experiments, Simulations and a Reduced-Order Model
- Author
-
Kelin Chen, Adrian J. Carter, and Yannis P. Korkolis
- Subjects
deep-drawing ,plastic instability ,wrinkling ,anisotropy ,stamping ,reduced-order model ,Production capacity. Manufacturing capacity ,T58.7-58.8 - Abstract
Flange wrinkling is often seen in deep-drawing process when the applied blankholding force is too small. This paper investigates the plastic wrinkling of flange under a constant blankholding force. A series of deep-drawing experiments of AA1100-O blanks are conducted with different blankholding forces. The critical cup height and wrinkling wave numbers for each case is established. A reduced-order model of flange wrinkling is developed using the energy method, which is implemented to predict the flange wrinkling of AA1100-O sheet by incrementally updating the flange geometry and material hardening parameters during the drawing process. A deep-drawing finite element model is developed in ABAQUS/standard to simulate the flange wrinkling of AA1100-O blanks under constant blankholding force. The predicted cup height and wave numbers from the finite element model and reduced-order model are compared with the experimental results, which demonstrates the accuracy of the reduced-order model, and its potential application in fast prediction of wrinkling in deep-drawing process.
- Published
- 2022
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