锻压技术

基于尺寸效应的互锁型软波导塑性扣接过程研究

英文标题：Research on plastic locking process of interlock-type soft waveguide based on size effects

作者：鲍成伟段兰崔增贤

单位：西北工业大学

分类号：TG306

出版年,卷(期):页码：2020,45(4):100-107

摘要：

为解决某互锁型软波导在塑性扣接过程中出现的连接破损导致产品报废的问题，在排除其他因素的情况下，研究软波导在成形过程中波导材料的尺寸效应对变形过程的影响。依靠H70黄铜材料的拉伸试验数据，获得了不同尺寸效应系数对屈服强度和切线模量的影响，修正了双线性弹塑性本构关系，建立了能够反映尺寸效应的弹塑性本构模型。通过有限元数值方法实现了塑性扣接过程的模拟，证实了材料尺寸效应系数对扣接加工效果的影响。最后通过试验验证了扣接效果，解决了扣接破损的问题，证明了依据尺寸效应系数进行材料的选择和制备的必要性。

In order to solve the product scrap problem caused by the connection broken of a certain type of interlock-type soft waveguide in the plastic locking process，in the case of other factors were excluded, the influence of size effects of waveguide material on the deformation process in the forming process of soft waveguide was studied. Based on the tensile test data of H70 brass material, the influences of different size effect coefficients on yield strength and tangent modulus were obtained, and the bilinear elastic-plastic constitutive relation was modified. The elastic-plastic constitutive model which can reflect the size effects was established. Finite element numerical method was used to simulate the plastic locking process. The effect of material size effect coefficient on the locking process was confirmed. Finally, according to the experiment, the effect of locking is verified, and the problem of locking damage is solved. The results show that it is necessary to select and prepare materials according to the size effect coefficient.

基金项目：

教育部协同育人项目（201802204005）

鲍成伟(1989-)，男，硕士，实验师 E-mail：baocw@npumd.edu.cn

参考文献：

[1]Hwangbo Y, Song J H. Fatigue life and plastic deformation behavior of electrodeposited copper thin films[J]. Materials Science & Engineering: A, 2010, 527(9):2222-2232.

[2]Ran J Q, Fu M W, Chan W L. The influence of size effect on the ductile fracture in micro-scaled plastic deformation[J]. International Journal of Plasticity, 2013, 41(2):65-81.

[3]Meng B, Fu M W, Fu C M, et al. Ductile fracture and deformation behavior in progressive microforming[J]. Materials & Design, 2015,83(10):14-25.

[4]Cheng L D, Wang C J, Wang C J, et al. Size effects on plastic deformation behavior in micro radial compression of pure copper[J]. Transactions of Nonferrous Metals Society of China, 2013, 23(9):2686-2691.

[5]Raulea L V, Goijaerts A M, Govaert L E, et al. Size effects in the processing of thin metals[J]. Journal of Materials Processing Technology, 2001, 115(1):44-48.

[6]Michel J F, Picart P. Size effects on the constitutive behaviour for brass in sheet metal forming[J]. Journal of Materials Processing Technology, 2003, 141(3):439-446.

[7]Gau J T, Principe C, Wang J. An experimental study on size effects on flow stress and formability of aluminm and brass for microforming[J]. Journal of Materials Processing Technology, 2007, 184(1-3):42-46.

[8]Peng Linfa, Liu Fang, Ni Jun, et al. Size effects in thin sheet metal forming and its elastic-plastic consititutive model[J]. Materials & Design, 2007,28(5):1731-1736.

[9]谭险峰.基于尺寸效应微成形表面层模型建立与模拟[J].热加工工艺,2013, 42(9): 118-121.

Tan X F. Creation and simulation of surface layer model in micro-forming based on size effect[J]. Hot Working Technology, 2013, 42(9):118-121.

[10]董湘怀,王倩,章海明,等.微成形中尺寸效应研究的进展[J].中国科学:技术科学,2013, (2): 115-130.

Dong X H, Wang Q, Zhang H M, et al. Progress in research on size effect in microforming[J]. Scientia Sinica: Technologica,2013, (2):115-130.

[11]邹章雄,项金钟,许思勇. Hall-Petch关系的理论推导及其适用范围讨论[J].物理测试,2012, (6): 13-17.

Zou Z X, Xiang J Z, Xu S Y. Theoretical derivation of Hall-Petch relationship and discussion of its applicable range[J]. Physics Examination and Testing, 2012, (6):13-17.

[12]范蓉,赵坤民,阮金华,等.脉冲电流下黄铜合金H70的力学性能和微观组织[J].东北大学学报：自然科学版,2016, (9): 1322-1326.

Fan R, Zhao K M, Ruan J H, et al. Mechanical properties and microstructures of brass alloy H70 subjected to pulse current[J]. Journal of Northeastern University: Natural Science, 2016, (9):1322-1326.

[13]李其亭,张祎,马东海,等.基于有限元法的矩形软波导抗振性能研究[J].光纤与电缆及其应用技术,2013, (3):21-24.

Li Q T, Zhang Y, Ma D H, et al. Research on the anti-vibration performance of flexible rectangular waveguide based on FEM[J]. Optical Fiber & Electric Cable and Their Applications, 2013, (3):21-24.

[14]黄莉榕.机载环境下雷达波导的疲劳特性分析[D].南京：南京理工大学,2010.

Huang L R. Analysis of Fatigue Property of Waveguide in Airborne Radar Environment[D]. Nanjing: Nanjing University of Science & Technology, 2010.

[15]刘春梅,刘郁丽,沈化文,等.H96黄铜双脊矩形波导管绕弯截面变形特征研究[J].航空材料学报,2013, (6):13-19.

Liu C M, Liu Y L, Shen H W, et al. Characteristics of cross section deformation of double-ridge rectangular tube of H96 brass in rotary draw bending process[J]. Journal of Aeronautical Materials, 2013, (6):13-19.

[16]黄华茂,黄德修,刘文.Si基SiO2波导芯层热应力的理论研究[J].半导体学报,2007, (9): 1459-1464.

Huang H M, Huang D X, Liu W. Analytical solutions for thermal stresses in the core of silica-on-silicon waveguide[J]. Chinese Journal of Semiconductors,2007, (9):1459-1464.

[17]梁铁柱,黄文华,朱四桃,等.一种无焊缝软圆波导仿真与测试[J].现代应用物理,2015, (3): 197-201.

Liang T Z, Huang W H, Zhu S T, et al. Simulation and test of a corrugated flexible circular waveguide without a soldering slot[J]. Modern Applied Physics,2015, (3): 197-201.

[18]刘晓燕,柳奎君,罗雷,等.工业纯钛等径弯曲通道变形过程中的孪生行为研究进展[J].稀有金属,2019,43(8)：863-871.

Liu X Y, Liu Q J, Luo L, et al. Progress in research on twinning behavior of commercially pure titanium during equal channel angular pressing[J]. Chinese Journal of Rare Metals,2019,43(8)：863-871.

服务与反馈：

【文章下载】【加入收藏】