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摘要：
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以某型号65Mn离合器整体式波形片为研究对象，结合逆向试算法确定参数模型，通过Dynaform有限元分析软件对该波形片子片（厚度t为0.6 mm）的成形及回弹过程进行了数值模拟，分析了不同虚拟冲压速度对材料应力应变及回弹量的影响。当速度参数设定在200 mm·s-1时，研究了模具深度及弯曲半径对波形片成形高度的影响规律，从而按照模拟结果优化了模具结构参数。其中，弯曲半径越大，回弹量越大；而模具深度越小，则回弹量越大，成形高度数值越小。试验结果表明，当模具关键参数R1(R2)，R3，R4，H1，H2和H3分别为13.5，21，24，1.8，1.2和1.3 mm时，可加工出符合产品要求的波形片，回弹过程模拟与实际生产结果取得较好的吻合性，这也说明了Dynaform可以较好地模拟计算厚度较小且材料屈服强度偏高的接触卸载回弹问题。
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For the integral waveform piece 65Mn of the clutch, combining the reverse trial method to determine parameter model, the forming and springback of waveform piece (t=0.6 mm) were simulated by the FEM software Dynaform, and the influences of different virtual forming velocities on stress, strain and spingback of material were analyzed. Then, when the velocity was 200 mm·s-1, the influences of die depth and bending radius on forming height of waveform piece were studied, and the die structure parameters were optimized according to simulation results. Wherein, the spingback increased with the increase of bending radius, and the springback increased and forming height decreased with the decrease of die depth. The experimental results show that when the key parameters of die R1(R2), R3, R4, H1, H2 and H3 are 13.5, 21, 24, 1.8, 1.2 and 1.3 mm respectively, the qualified waveform piece can be produced to meet the requirements of the product, and the simulation results are in good accordance with the results of the product manufactured in factory. Thus, the contact unloading springback process for smaller thickness and higher yield strength can be preferably simulated by software Dynaform.
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基金项目：
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国家自然科学基金资助项目（51605108）
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作者简介：
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作者简介：刘飞（1985-），男，博士，讲师
E-mail：liufeiguet@163.com
通讯作者：范昇（1988-），男，学士，工程师
E-mail：410920755@qq.com
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参考文献：
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［1］高利平，汪木兰. 基于正交试验的离合器波形片冲压成形工艺参数优化
［J］. 锻压技术，2015，40(11): 32-35.
Gao L P，Wang M L. Optimization of stamping process parameters for cushion segment based on orthogonal experiment
［J］. Forging & Stamping Technology，2015，40(11): 32-35.
［2］张弛，胡应存，梁宝钱，等. 汽车离合器高强度波形片成形回弹数值模拟及模具优化
［J］. 重庆理工大学学报：自然科学版，2012，26 (1)：17-21.
Zhang C，Hu Y C，Liang B Q，et al. Study on simulation of springback and optimization design of die for cushion segment of automobile clutch
［J］. Journal of Chongqing University of Technology: Natural Science，2012，26(1): 17-21.
［3］穆瑞，朱晓红，王晓莉. 基于正交试验的波形片冲裁工艺参数优化
［J］. 锻压技术，2016，41(8)：159-162.
Mu R，Zhu X H，Wang X L. Optimization on blanking process parameters for cushion segment based on orthogonal experiment
［J］. Forging & Stamping Technology，2016，41(8): 159-162.
［4］刘奎武，边巍. 基于Dynaform的波形片成形回弹研究
［J］. 锻压技术，2015，40(3): 127-130.
Liu K W，Bian W，Study on springback in cushion segment forming based on Dynaform
［J］. Forging & Stamping Technology，2015，40(3): 127-130.
［5］黄伟，李梦群，杨亚威.基于Dynaform的V形件弯曲回弹数值分析
［J］. 锻压技术，2014，39 (6)：118 -121.
Huang W，Li M Q，Yang Y W. Numerical analysis of springback for V-shaped pieces based on Dynaform
［J］. Forging & Stamping Technology，2014，39 (6): 118-121.
［6］胡志超，李延平，常勇，等.基于数值模拟的板料冲压成形回弹补偿方法
［J］. 锻压技术，2012，37(2): 163-166.
Hu Z C，Li Y P，Chang Y，et al. Springback compensation method of sheet stamping forming based on numerical simulation
［J］. Forging & Stamping Technology，2012，37(2): 163-166.
［7］张亚岐，穆传坤，阮楹妍，等. 基于MARC的混模法冲压回弹分析
［J］. 塑性工程学报，2017，24 (1): 98-103.
Zhang Y Q，Mu C K，Ruan Y Y，et al. Analysis of mix molding stamping springback based on MARC
［J］. Journal of Plasticity Engineering，2017，24 (1): 98-103.
［8］穆瑞，王晓莉，张咏琴. 基于逆向试算法的波形片成形模具设计
［J］. 锻压技术，2017，42(2): 110-113.
Mu R，Wang X L，Zhang Y Q. Design of forming die for cushion segment based on reverse trial method
［J］. Forging & Stamping Technology，2017,42(2): 110-113.
［9］Bozdemir M，Golcu M. Artificial neural network analysis of springback in V bending
［J］. Journal of Applied Science，2008，8(17): 3038-3043.
［10］Ruffni R，Cao J，Using neural network for springback minimization in a channel forming process
［J］.Journal of Materials Processing Technology，1998，107(5): 65-73.
［11］Cao J，Kinsey B，Solla S A. Consistent and minimal springback using a stepped binder force trajectory and neural network control
［J］.Journal of Engineering Materials and Technology，2000，122(1): 113-118.
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