Abstract
Forming large thin-walled hemispherical parts by hydroforming, serious thinning of wall thickness, instability of suspension area, and fracture are often accompanied. In order to solve the above problems, this paper takes AA6061-T6 aluminum alloy thin-walled hemispherical parts as the research object, and uses the method of finite element numerical simulation analysis and experimental verification to carry out the formability analysis of double-layer sheet hydroforming. In order to improve the accuracy of numerical simulation, uniaxial tensile tests are carried out on AA6061-T6 tensile specimens. Based on the BP neural network prediction model, a constitutive model that can truly reflect the plastic deformation characteristics of materials is established, which can provide more accurate material properties for numerical simulation. In this paper, the wall thickness and fittability of the parts are taken as the evaluation indexes, and the simulation analysis of the double-layer sheet hydroforming is carried out combined with the pre-bulging process, and the process flow of the single-sheet and the double-layer sheet hydroforming is compared and analyzed. The forming law of formed sheet under different friction coefficient between sheets and different upper sheet thickness is discussed. In addition, the influence of different temperature on the forming quality of parts is also discussed. It is found that the sheet metal will soften at the appropriate temperature, and the wall thickness distribution of the parts suspending area will be further improved.
Finally, the forming experiments are carried out using the optimized process conditions, and the results are basically consistent with the simulation results. The results show that the research can effectively provide scientific guidance for the forming of large thin-walled hemispherical parts.
Similar content being viewed by others
Data availability
The data obtained in the framework of this study are available to the journal upon request.
References
Mahabunphachai S, Koç M (2010) Investigations on forming of aluminum 5052 and 6061 sheet alloys at warm temperatures. Mater Des 31(5):2422–2434. https://doi.org/10.1016/j.matdes.2009.11.053
Ozturk F, Sisman A, Toros S, Kilic S, Picu RC (2010) Influence of aging treatment on mechanical properties of 6061 aluminum alloy. Mater Des 31(2):972–975. https://doi.org/10.1016/j.matdes.2009.08.017
Wang H, Shen X (2021) A novel hydrodynamic deep drawing utilizing a combined floating and static die cavity. Int J Adv Manuf Technol 114(3–4):829–839. https://doi.org/10.1007/s00170-021-06927-5
Senthilkumar V, Balaji A, Arulkirubakaran D (2013) Application of constitutive and neural network models for prediction of high temperature flow behavior of Al/Mg based nanocomposite. Trans Nonferrous Met Soc China 23(6):1737–1750. https://doi.org/10.1016/S1003-6326(13)62656-4
Qin Xiang Xia, Shi Xian Chen, Xin Zhu (1992) Composite laminates and their applications. Forging Stamping Technol https://doi.org/10.13330/j.issn.1000-3940.1992.06.005
Zhou BJ, Yong Chao Xu, Zhang ZC, Lan Hu (2020) Research development for deep drawing of multilayer sheet metals. Mater Rep 34(23):23165–23170. https://doi.org/10.11896/cldb.19100085
Liu Y, Wang ZJ (2015) Analysis of bulging process of aluminum alloy by overlapping sheet metal and its form ability. Trans Nonferrous Metals Soc China 25(4):1050–1055. https://doi.org/10.1016/S1003-6326(15)63697-4
Zhang ZC, Yong Chao Xu, Yuan SJ (2016) Effect of outer stainless steel on the deformation behavior of hydro-bulging of 5A06 aluminum alloy sheet. J Mech Eng 52(14):40–47. https://doi.org/10.3901/JME.2016.14.040
Yong Chao Xu (2016) Bin Jun Zhou, Jiu Hong Zhou (2016) Effects of outside sheet on the bulging properties of inside 2219 aluminum FSW Sheet. J Netshape Forming Eng 8(05):65–70. https://doi.org/10.3969/j.issn.1674-6457.2016.05.010
Zhou BJ, Yong Chao Xu (2016) Wrinkle behavior of hydroforming of aluminum alloy double-layer sheets. J Miner Metals Mater Soc 68(12):3201–3207. https://doi.org/10.1007/s11837-016-2025-8
Zhou BJ, Yong Chao Xu (2018) The effect of upper sheet on wrinkling and thickness distribution of formed sheet part using double-layer sheet hydroforming. Int J Adv Manuf Technol 99(5–8):1175–1183. https://doi.org/10.1007/s00170-018-2432-9
Zhou BJ, Yong Chao Xu, Zhang ZC (2020) Research on the selection principle of upper sheet in double-layer sheet hydroforming. Int J Adv Manuf Technol 109(7):1663–1669. https://doi.org/10.1007/s00170-020-05615-0
Jalil A, Gollo MH, Morad Sheikhi M, Hossein Seyedkashi SM (2016) Hydrodynamic deep drawing of double layered conical cups. Trans Nonferrous Metals Soc China 26(1):237–247. https://doi.org/10.1016/S1003-6326(16)64109-2
Molaei M, Safaria M, Deilami Azodi H, Shahbazi Karami J (2018) Experimental and numerical investigations of hydromechanical deep drawing of a bilayer conical Cup. J Stress Anal 3(1):53–60. https://doi.org/10.22084/jrstan.2018.16084.1046
Mirnia MJ, Vahdani M (2020) Calibration of ductile fracture criterion from shear to equibiaxial tension using hydraulic bulge test. J Mater Process Technol 280:116589. https://doi.org/10.1016/j.jmatprotec.2020.116589
Lang Li Hui, Yong Kun Wu, Wang Yong Ming, Liu Bao Hua, Li Lei (2018) Influence of critical process parameters on hydroforming for aluminum alloy non-axisymmetric box with oblique flange. Forging Stamping Technol 43(06):47–52. https://doi.org/10.13330/j.issn.1000-3940.2018.06.010
Muammer K, Ali A, John C (2011) An experimental study on robustness and process capability of the warm hydroforming process. J Manuf Sci Eng 133(2):021008. https://doi.org/10.1115/1.4003619
Funding
This paper was financially supported by Harbin academic leader fund (2017RAXXJ008) and National Natural Science Foundation of China (51975167).
Author information
Authors and Affiliations
Contributions
Zhi He Zhang: conceptualization, methodology, writing—original draft preparation, experimental scheme design. Xiao Jing Liu: writing—reviewing and editing. Xue Feng Ma: experiment. Chao Li: verification. validation. Ying Ying Zhou: supervision.
Corresponding author
Ethics declarations
Ethical approval
Not applicable.
Consent to participate
Not applicable.
Consent for publication
Not applicable.
Competing Interests
The authors declare no competing interests.
Additional information
Publisher's note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
This article is completed under my independent research, and without the phenomenon that quotes largely or plagiarizes other articles and so on. Therefore, I will be corresponding responsible for the thing.
Rights and permissions
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
About this article
Cite this article
Liu, X.J., Zhang, Z.H., Ma, X.F. et al. Study on hydroforming of AA6061-T6 aluminum alloy sheet based on upper sheet. Int J Adv Manuf Technol 123, 4447–4464 (2022). https://doi.org/10.1007/s00170-022-10534-3
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00170-022-10534-3