Reducing the metal intensity of the EMU-train car body frame
https://doi.org/10.46973/0201-727X_2026_1_102
Abstract
Increasing the design speeds of modern rolling stock inevitably requires a reduction in its weight. Optimization of the frame is advisable due to its largest weight fraction within the car body. Frame versions are considered that allow for weight reduction compared to the traditional diagonal design for EMU-trains in this paper. It is shown that a design combining the center beam with the diagonals into single long diagonals is suitable for transferring loads from the coupling to the frame profile. It was found that a single-braced center beam along the entire length of the car body is the most efficient in terms of transmitting longitudinal forces. However, to reduce metal intensity, it can be significantly weakened in the central part of the car body. The center beam design for the considered structure reduces the frame weight by 11 % and halves the cross-section of the frame profile, while increasing the deflection due to dead weight by 9%. This design allows for the retention of the pin connection between the bogie and the body, typical for electric trains.
Keywords
About the Author
R. V. Guchinsky
Troitsk Crane Plant Ltd, Saint-Petersburg Department, Structural Engineer, Institute for Problems of Mechanical Engineering of the RAS (IPME RAS),
Russian Federation
Russian Federation
Guchinsky Ruslan Valerievich, Applied Research Laboratory, Candidate of Engineering Sciences, Senior Research Officer
References
1. Natural Frequency Evaluation of a Lightweight GFRP Composite Bogie Frame / J.-S. Kim, W.-G. Lee, Il.-K. Kim, H.-J. Yoon // International journal of precision engineering and manufacturing. – 2015. – Vol. 16 (1). – P. 105–111. – DOI 10.1007/s12541-015-0013-5.
2. Structural lightweight components for energy-efficient rail vehicles using high performance composite materials / A. Ulbricht, F. Zeidlera, F. Bilkenrotha, S. Soltysiaka // Transportation Research Procedia. – 2023. – Vol. 72. – P. 1685–1692. – DOI 10.1016/j.trpro.2023.11.641.
3. Justification of designs to increase the bearing structure rigidity of the passenger car body / D. Ya. Antipin, E. V. Lukashova, A. P. Boldyrev, F. Yu. Lozbinev // Transport Engineering – 2023. – No. 5 (17). – P. 60–68. – DOI 10.30987/2782-5957-2023-5-60-68.
4. Guchinsky, R.V. Optimization of an EMU train car body by the value of the natural vibration frequency / R. V. Guchinsky // Russian Railway Science Journal. – 2021. – Vol. 80, No. 3. – P. 152–159. – DOI 10.21780/2223-9731-2021-80-3-152-159.
5. Guchinsky, R. V. Calculation of the frequency of natural bending vibrations of the car body of an electric train with consideration for support yield / R. V. Guchinsky // Herald of the Ural State University of Railway Transport. – 2019. – No. 2 (42). – P. 4–11. – DOI 10.20291/2079-0392-2019-2-4-11.
6. Research on lightweight rail vehicle body based on sensitivity analysis / J. Yin, Q. Zhang, X. Li, Y. Zhu [et al.] // J. Eng. Technol. Sci. – 2024. – Vol. 56 (3). – P. 353–366. – DOI 10.5614/j.eng.technol. sci.2024.56.3.4.
7. Seo, S. I. Development of a hybrid composite bodyshell for tilting trains / S. I Seo, J. S. Kim, S. H. Cho // Proc. Institution of Mechanical Engineers, Part F : Journal of Rail and Rapid Transit. – 2008. – Vol. 222 (1). – P. 1–13. – DOI 10.1243/09544097JRRT96.
8. Structural-optimization-based design process for the body of a railway vehicle made from extruded aluminum panels / H. A. Lee, S. B. Jung, H.-H. Jang [et al.] // Journal of Rail and Rapid Transit. – 2015. – Vol. 230 (4). – P. 1283–1296. – DOI 10.1177/0954409715593971.
9. The next generation material for lightweight railway car body structures : Magnesium alloys / W. G. Lee, J. S. Kim, S.-J. Sun, J. Y. Lim // J Rail and Rapid Transit. – 2018. – Vol. 232 (1). – P. 25–42. – DOI 10.1177/0954409716646140.
10. Standards for the calculation and design of new and modernized cars for the 1520 mm gauge railways of the Ministry of Railways (non-self-propelled). – Moscow : VNIIV – VNIIZhT,1983. – 260 p.
11. Cascino, A. A strategy for lightweight designing of a railway vehicle car body including composite material and dynamic structural optimization / A. Cascino, E. Meli, A. Rindi // Railway Engineering Science. – 2023. – Vol. 31 (4). – P. 340–350. – DOI 10.1007/s40534-023-00312-6.
12. Petinov, S. V. Damage identity in fatigue assessment of structures / S. V. Petinov, R. V. Guchinsky, V. G. Sidorenko // Magazine of Civil Engineering. – 2016. – No. 1. – P. 82–88. – DOI 10.5862/MCE.61.8.
13. Guchinsky, R. V. Uncertainties in fatigue assessment of structures in design and in service / R. V. Guchinsky, S. V. Petinov // Herald of the Ural State University of Railway Transport. – 2021. – No. 4 (52). – С. 35–44. – DOI 10.20291/2079-0392-2021-4-35-44.
14. STO SDS OPZHT-05-2010. Norms for design, calculation and evaluation of the strength and dynamics of the mechanical part of metro cars of gauge 1520 mm. – Moscow, 2010. – 115 p.
15. Guide to the arrangement of electric trains of the ET2, ER2T, ED2T, ET2M series. – Moscow : Center for Commercial Development, 2003. – 184 p.
16. GOST 33796–2016. Multiple-unit rolling stock. Requirements for strength and dynamic qualities. – Moscow : Standartinform, 2016. – 35 p.
17. GOST 34451–2018. Multiple-unit rolling stock. Method of dynamic strength tests. – Moscow : Standartinform, 2018. – 22 p.
18. Guchinsky, R. V. Influence of equipment rigidity on the natural bending frequency of the EMU train car body / R. V. Guchinsky // Vniizht Bulletin (Railway Research Institute Bulletin). –2018. – Vol. 77, No. 4. – P. 251–255. – DOI 10.21780/2223-9731-2018-77-4-251-255.
Review
For citations:
Guchinsky R.V. Reducing the metal intensity of the EMU-train car body frame. Vestnik Rostovskogo Gosudarstvennogo Universiteta Putej Soobshcheniya. 2026;(1):102-109. (In Russ.) https://doi.org/10.46973/0201-727X_2026_1_102
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