锻压技术

基于变摩擦系数的铝合金板料成形性能试验

英文标题：Formability experiment of aluminum alloy sheet based on variable friction coefficient

作者：陈德茂夏建生周鑫

单位：江苏大学盐城工学院

分类号：TG155.5

出版年,卷(期):页码：2020,45(6):158-162

摘要：

采用CFT-I型多功能材料表面综合性能测试仪，在边界润滑条件下，测量施加不同载荷时AA6111铝合金和H13模具钢之间的摩擦系数，研究载荷对材料成形性能的影响规律。运用Origin软件分析试验数据，并建立受载荷影响的变摩擦系数模型，对所建模型进行有限元分析及试验验证。研究结果表明，当试验载荷从0.204 MPa增加到4.028 MPa时，摩擦系数随载荷的不断增大而逐渐减小，且减小趋势逐渐变缓。基于变载荷摩擦系数模型与试验测量得到的摩擦系数之间的误差值较小，均在误差允许范围内。仿真与试验的厚度分布规律基本一致，零件的最大减薄发生在凸模圆角处，其法兰边及底面的厚度变化较小，验证了所建摩擦模型的有效性。

The friction coefficients between AA6111 aluminum alloy and H13 die steel under different loads were measured by CFT-I multifunctional material surface comprehensive performance tester under boundary lubrication condition, and the influence laws of load on the formability of materials were studied. Then, the test data were analyzed by software Origin, and the variable friction coefficient model affected by load was established. Next, the finite element analysis and test verification were performed on the model. The results show that when the experimental load increases from 0.204 to 4.028 MPa, the friction coefficient decreases with the increasing of load, and the decreasing trend slows down gradually. Furthermore, the error value of friction coefficients measured by the friction coefficient model based on variable load and the test is small, and it is within the allowable range of error. Therefore, the thickness distribution law of simulation is basically the same as that of test, the maximum thinning of parts occurs at the fillet of punch, and the thicknesses of flange edge and bottom change little to verify the effectiveness of friction model established.

基金项目：

国家自然科学基金资助项目 (51505408)

陈德茂（1994-），男，硕士研究生 E-mail：18252038323@163.com 通讯作者：夏建生（1980-），男，博士，副教授 E-mail：Xiajiansheng@163.com

参考文献：

［1］王家毅，米振莉，李辉，等.基于热加工图6082铝合金锻造工艺优化及强化机制研究
［J］.稀有金属,2019，43(2)：113-121.

Wang J Y, Mi Z L, Li H, et al. Isothermal forging process and strengthening mechanism of 6082 aluminum alloy through processing map
［J］. Chinese Journal of Rare Metals,2019,43(2):113-121.

［2］屠海令，马飞，张世荣，等.我国新材料产业现状分析与前瞻思考
［J］.稀有金属,2019,43(11):1121-1130.

Tu H L, Ma F, Zhang S R, et al.Current status and future insight of new materials industry in China
［J］.Chinese Journal of Rare Metals,2019,43(11):1121-1130.

［3］李军, 陈云霞,李中兵.汽车轻量化应用技术探讨
［J］.汽车工艺与材料,2010，(2):12-17.

Li J, Chen Y X, Li Z B. Investigation on automotive lightweight application technology
［J］. Automobile Technology & Material,2010，(2):12-17.

［4］马鸣图, 游江海,路洪洲，等.铝合金汽车板性能及其应用
［J］.中国工程科学,2010,12(9):4-20，33.

Ma M T, You J H, Lu H Z,et al.Properties and application of aluminum alloy automobile plate
［J］.Chinese Engineering Science,2010,12(9):4-20，33.

［5］古丽, 张建,李云涛，等. 6061铝合金板材冲压成形性能研究
［J］. 重型机械,2009,（2）:20-24.

Gu L, Zhang J, Li Y T, et al. Research on the property of 6061 alloy sheet drawing
［J］. Heavy Machinery,2009,（2）:20-24.

［6］张袁. 汽车用铝合金板料冲压成形性研究
［D］. 合肥：合肥工业大学,2013.

Zhang Y. Study on Stamping Formability of Aluminum Alloy sheet for Automobile
［D］.Hefei: Hefei University of Technology,2013.

［7］张志强, 张晓凯,何东野.6016铝合金热冲压数值模拟研究
［J］.锻压技术,2018,43(12):16-19.

Zhang Z Q, Zhang X K, He D Y. Research on numerical simulation of hot stamping for 6016 aluminum alloy
［J］. Forging & Stamping Technology, 2018, 43 (12): 16-19.

［8］傅垒, 王宝雨,孟庆磊，等.铝合金热冲压成形质量影响因素
［J］.中南大学学报:自然科学版,2013,44(3):936-941.

Fu L, Wang B Y, Meng Q L,et al. Factors affecting quality in hot stamping of aluminum alloy
［J］. Journal of Central South University: Science and Technology,2013,44(3):936-941.

［9］马闻宇, 王宝雨,周靖,等.铝合金热冲压过程数值模拟分析
［J］.航空制造技术,2016,(4):95-98.

Ma W Y,Wang B Y,Zhou J,et al. Analysis of hot stamping of aluminum alloy based on numerical simulation
［J］. Aeronautical Manufacturing Technology,2016,(4):95-98.

［10］Zhou J, Wang B, Lin J, et al. Optimization of an aluminum alloy anti-collision side beam hot stamping process using a multi-objective genetic algorithm
［J］. Archives of Civil and Mechanical Engineering, 2013, 13(3):401-411.

［11］Ma W Y, Wang B Y, Fu L,et al. Effect of friction coefficient in deep drawing of AA6111 sheet at elevated temperatures
［J］. Transactions of Nonferrous Metals Society of China, 2015, 25(7):2342-2351.

［12］付秀娟. 变速/变载条件下板料冲压成形性能及其变形机理研究
［D］.武汉：华中科技大学,2012.

Fu X J. Study on Forming Property and Deformation Mechanism of Sheet Metal Stamping under Variable Speed / Variable Load
［D］.Wuhan: Huazhong University of Science and Technology,2012.

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