Flange Wrinkling in Deep-Drawing: Experiments, Simulations and a Reduced-Order Model
Flange Wrinkling in Deep-Drawing: Experiments, Simulations and a Reduced-Order Model
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DOI：
10.3390/jmmp6040076
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发表时间：
2022-08-01
影响因子：
3.2
通讯作者：
Korkolis, Yannis P.
中科院分区：
文献类型：
--
作者：
Chen, Kelin;Carter, Adrian J.;Korkolis, Yannis P.
在拉深成形过程中，当施加的压边力过小时，经常会出现翻边现象。研究了恒压边力作用下法兰盘的塑性起皱问题。对AA 1100-O板料进行了不同压边力的拉深成形试验。建立了每种情况下的临界杯高和临界波纹数。采用能量法建立了一个凸缘变形的降阶模型，并通过在拉深过程中逐步更新凸缘几何参数和材料硬化参数，实现了对AA 1100-O板材凸缘变形的预测。在ABAQUS/standard中建立了AA 1100-O板料在恒压边力作用下翻边成形的有限元模型。将有限元模型和降阶模型预测的杯形高度和波数与实验结果进行了比较，验证了降阶模型的准确性，以及其在快速预测拉深过程中起皱的潜在应用价值。
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.