Dynamic experimental studies of A6N01S-T5 aluminum alloy material and structure for high-speed trains
- 80 Downloads
In this study, we focus on the dynamic failure property of A6N01S-T5 aluminum alloy use for high-speed trains. The method of split Hopkinson tensile bar (SHTB) and three-dimensional (3D) digital image correlation (DIC) was put forward to find the dynamic mechanical properties and dynamic failure strain of A6N01S-T5 aluminum alloy, and on the basis of this, Johnson–Cook model constitutive parameters and dynamic failure strain parameters were obtained through a series of static and dynamic tests. An important character of this method was that the sandwich structure from the true high-speed train was used in penetration test, followed by the numerical calculation of the same working condition using LS-DYNA. Then we compare the experimental results with simulation results mentioned above in terms of failure morphology in structure and the bullet speed throughout the entire process to verify the accuracy of the parameter. The experimental results provide a data basis for the crash simulation model of high-speed trains, in turn to optimize the structural design and whole efficiency.
KeywordsA6N01S-T5 aluminum alloy Dynamic failure strain Constitutive model Dynamic mechanical properties
This work was supported by the National Department of Science and Technology (Grant 2016YFB1200505).
- 1.Chen, H.G., Administration, J.R.: Performance of the a6n01s-t5 aluminum alloy and the welding joint for high speed train at low temperature. Electr. Weld. Mach. 46, 77–82 (2016) (in Chinese)Google Scholar
- 5.Zhu, Z.Y., Chen, P., Zhou, H.M., et al.: Effect of the welding heat input on residual stresses in butt-weld of high-speed train. In: International Conference on Materials and Products Manufacturing Technology, Chengdu, October 28–30 (2011)Google Scholar
- 7.Mrówka-Nowotnik, G.: Influence of chemical composition variation and heat treatment on microstructure and mechanical properties of 6xxx alloys. Arch. Metall. Mater. 46, 98–107 (2010)Google Scholar
- 9.Irving, B.: Welding the four most popular aluminum alloys. Weld. J. 73(2), 51–55 (1994)Google Scholar
- 10.Bergsma, S.C.: Aluminum-magnesium-silicon alloy and treatment schedule, for use in the transport industry. US Patent 5961752-A (1999)Google Scholar
- 16.Kang, S.G., Shin, K.B., Ko, T.H., et al.: Lightweight design of car bodies for double deck high-speed trains. J. Korean Soc. Manuf. Technol. Eng. 24, 177–185 (2015) (in Korean)Google Scholar
- 17.Gao, Y.H., Shi, X.F., Xie, S.M., et al.: Sensitivity analysis and lightweight design for high-speed train car body. J. Rail Way Sci. Eng. 14, 885–891 (2017) (in Chinese)Google Scholar
- 18.Rochard, B.P., Schmid, F.: Benefits of lower-mass trains for high speed rail operations. Proc. Inst. Civil Eng. Transp. 157, 51–64 (2004)Google Scholar
- 19.Wennberg, D., Stichel, S., Wennhage, P.: Benefits of weight reduction in high-speed train operations. ZEV Rail Glasers Annalen 137, 77–87 (2013)Google Scholar
- 20.Ezra, A.A., Fay, R.J.: An assessment of energy absorbing devices for prospective use in aircraft impact situations. in: Dynamic behaviour of structures, pp. 225–246. Pergamon, London (1972)Google Scholar