锻压技术

夹钳数量对双曲顶件拉伸成形的影响

英文标题：Effect of clamp quantity on stretch forming for hyperbolic top part

关键词：双曲顶件夹钳拉伸成形贴模应变厚度

分类号：TG386

出版年,卷(期):页码：2022,47(4):91-94

摘要：

利用有限元软件ABAQUS，以双曲顶件为研究对象，建立不同夹钳数量下的拉伸成形有限元模型，分析夹钳数量对板料成形效果的影响。结果表明：拉形力相同时，随着夹钳数量的增加，板料的成形性更好。整体夹钳和5个夹钳拉伸成形的板料均未完全贴模，后者的贴模程度优于前者；10个和15个夹钳的拉伸成形板料完全贴模，后者得到的成形件的应变、厚度分布比前者更均匀。在柔性拉伸成形装置上进行双曲顶件成形试验，试验结果与数值模拟结果相吻合，验证了双曲顶件柔性拉伸成形的可行性和数值模拟的准确性。

For the hyperbolic top part, the finite element model of stretch forming with different numbers of clamps were established by finite element software ABAQUS, and the influence of the number of clamps on the forming effect of sheet metal was analyzed. The results show that when the stretch force is the same, with the increasing of the number of champs, the formability of sheet metal is better. The sheet metal stretched by the whole clamp and five clamps cannot be completely fitted the mold, and the degree of die fitting for the latter is better than that for the former. The sheet metal stretched by ten clamps and fifteen clamps can be completely fitted the die, the strain and thickness distributions of the forming part for the latter is more uniform than that for the former. The forming test of the hyperbolic top part was conducted by flexible stretch forming device, and the test results are in agreement with the numerical simulation results, which verifies the feasibility of flexible stretch forming for the hyperbolic top part and the accuracy of the numerical simulation.

基金项目：

吉林化工学院重大科技项目(2019017)；吉林化工学院博士启动基金项目（2021023）

作者简介：程艳艳（1980-），女，博士，副教授 E-mail：chengyanyan1980@sina.com

参考文献：

[1]谢洪志，王玲，赵天章，等. 基于数字化的蒙皮拉形加载轨迹优化与应用[J].锻压技术，2021，46(1)：56-59.

Xie H Z, Wang L, Zhao T Z, et al. Optimization and application of loading trajectory in stretch forming of skin based on digital [J]. Forging ＆ Stamping Technology, 2021,46(1):56-59.

[2]Sun L R, Cai Z Y, Li X J. Research on contact state and its effect on forming precision in uniform-contact stretch forming based on loading at multi-position[J]. Metals, 2019, 9(7): 719-719.

[3]房涛涛，李晓星，郎利辉. 大厚度双曲度铝合金飞机蒙皮拉伸成形工艺优化[J].锻压技术，2021，46(1)：29-36.

Fang T T, Li X X, Lang L H. Optimization on stretch forming process for hyperbolic aluminum alloy aircraft skin with large thickness [J]. Forging ＆ Stamping Technology, 2021,46(1):29-36.

[4]陈根发，方继钊，王勇，等. 复杂鼓包蒙皮成形技术分析与优化[J].锻压技术，2020,45(8)：82-87.

Chen G F，Fang J Z，Wang Y，et al. Analysis and optimization on complex bulging skin forming technology[J]. Forging & Stamping Technology，2020,45(8):82-87.

[5]王友，李明哲，彭赫力. 多夹钳式柔性拉伸成形时过渡区长度的研究[J].机械工程学报，2014，50(10)：72-79.

Wang Y, Li M Z, Peng H L. Study on transition length in multi-gripper flexible stretch forming process [J]. Journal of Mechanical Engineering, 2014，50(10):72-79.

[6]Xing J, Cheng Y Y, Yi Z. Stress-strain and form accuracy of carbon steel components produced by a multi-point stretch forming technique[J]. Strength of Materials, 2019, 51: 667-677.

[7]Xing J, Cheng Y Y, Li M Z. Research on swinging unit multi-point die with discrete elastic cushion in flexible stretch forming process[J]. Int. J. Adv. Manuf. Tech., 2017, 91: 237-245.

[8]李明哲，韩奇钢，冯朋晓，等. 多夹钳式拉伸成形机[P]. 中国：CN201755613U，2011-03-09.

Li M Z, Han Q G, Feng P X, et al. Multi-gripper stretch forming device[P]. China: CN201755613U, 2011-03-09.

[9]Wang Y, Li M Z, Wang D M, et al. Modeling and numerical simulation of multi-gripper flexible stretch forming process[J]. Int. J. Adv. Manuf. Tech., 2014, 73: 279-288.

[10]程艳艳，李明哲，邢健，等. 非规则曲面件的多夹钳式柔性拉伸成形研究[J]. 机械工程学报，2014，50(22)：90-96.

Cheng Y Y, Li M Z, Xing J, et al. Research of multi-gripper flexible stretch forming for irregular part[J]. Journal of Mechanical Engineering, 2014, 50(22): 90-96.

[11]程艳艳，李明哲，邢健. 不同单元形式对多点模具柔性拉伸成形质量的影响[J]. 吉林大学学报:工学版，2016，46(5)：1552-1557.

Cheng Y Y, Li M Z, Xing J. Effect of unit form on flexible stretch forming of multi-point die[J]. Journal of Jilin University: Engineering and Technology Edition, 2016, 46(5):1552-1557.

[12]Cai Z Y, Wang S H, Xu X D, et al. Numerical simulation for the multi-point stretch forming process of sheet metal[J]. Journal of Materials Processing Technology, 2009, 209(1): 396-407.

[13]Wang S H, Cai Z Y, Li M Z. Numerical investigation of the influence of punch element in multi-point stretch forming process[J]. Int. J. Adv. Manuf. Tech., 2010, 49: 475-483.

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