Springback analysis of 6016 aluminum alloy sheet in hot V-shape stamping
Springback analysis of 6016 aluminum alloy sheet in hot V-shape stamping
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6016铝合金板材热V型冲压回弹分析
DOI：
10.1007/s11771-019-4024-8
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发表时间：
2019-03-01
影响因子：
4.4
通讯作者：
Kang Yi
中科院分区：
文献类型：
--
作者：
Ma Wei-ping;Wang Bao-yu;Kang Yi
采用V形模具对6016铝合金热冲压成形过程中的回弹行为进行了一系列试验研究，并采用经验证可靠的有限元模型进一步阐明了回弹机理。研究了初始坯料温度、压边力、合模压力和凹模圆角半径对成形的影响。结果表明，当初始坯料温度升高到500 °C时，回弹显著降低。回弹量随着凹模压边力的增大和凹模圆角半径的减小而减小。在不同的初始温度下，压边力的影响是不同的。此外，在冲压过程中的侧壁弯曲和矫直被发现解释负回弹现象。
Springback behavior of 6016 aluminum alloy in hot stamping was investigated by a series of experiments under different conditions using V-shape dies and a finite element model which was validated reliable was used to further elucidate the springback mechanism. The effects of initial blank temperature, blank-holding force, die closing pressure and die corner radius were studied. It is found that springback decreases remarkably as the initial blank temperature rises up to 500 °C. The springback also reduces with the increase of die holding pressure and the decrease of die corner radius. Under different initial temperatures, the influence of blank-holding force is distinct. In addition, the bending and straightening of the side wall during the stamping process is found to interpret the negative springback phenomenon.