Model of Contact Temperature Fields in a Composite Cylinder of a Modernized Locomotive Frame

Authors

  • Galina Khromova Faculty of Railway Transport Engineering, Tashkent State Transport University, Tashkent 100176, Uzbekistan
  • Davran Radjibaev Faculty of Railway Transport Engineering, Tashkent State Transport University, Tashkent 100176, Uzbekistan
  • Jingyong Zhang School of Material and Physics, China University of Mining and Technology, Jiangsu, Xuzhou 221116, China
  • Aliya Zabiyeva Faculty of Transport and Energy, Eurasian National University, Astana, Kazakhstan
  • Kyrmyzy Balabekova Faculty of Transport and Energy, Eurasian National University, Astana, Kazakhstan
  • Assylbek Kassenov Toraighyrov University, Pavlodar, Kazakhstan; Kazakh National University of Water Management and Irrigation, Taraz 080000, Kazakhstan
  • Umida Ziyamukhamedova Faculty of Railway Transport Engineering, Tashkent State Transport University, Tashkent 100176, Uzbekistan
  • Ravshanbek Mirsaatov Faculty of Railway Transport Engineering, Tashkent State Transport University, Tashkent 100176, Uzbekistan
  • Zhou Fei PRD office, Shinawarta University

DOI:

https://doi.org/10.31181/rme558

Keywords:

Electric Locomotive, Main Frame of the Electric Locomotive Body, Dynamic Loads, Stress-Strain State of the Main Frames of Electric Locomotives, Contact Temperature Fields in a Composite Cylinder, Reinforcing Steel Plates, Fatigue Safety Factor, Overhaul of the Main Frames of Electric Locomotives, Algorithm

Abstract

The reliability and durability of electric locomotive frames are strongly influenced by coupled thermomechanical effects arising during structural modernization, particularly due to welding-induced temperature gradients and operational dynamic loads. However, existing studies on composite cylindrical structures typically address thermal contact or mechanical loading separately, limiting their applicability to real conditions.This study proposes a unified numerical–analytical framework for the coupled analysis of contact temperature fields and the stress–strain state in composite cylindrical elements of modernized locomotive frames (VL80s series). The approach integrates three-dimensional heat conduction with spatial elasticity theory, enabling simultaneous consideration of welding-induced thermal effects and dynamic loading. The governing boundary value problems are solved using Fourier–Bessel series expansions, Laplace transforms, and iterative piecewise linear approximation. The model is calibrated using experimental data obtained from full-scale locomotive tests and validated against finite element simulations (SolidWorks). The results demonstrate high predictive accuracy, with deviations from experimental measurements within 3–10%. Structural reinforcement by welded plates reduces peak stresses in critical zones by 10–15%, while maintaining safety factors above regulatory limits (≥1.4), even under material aging conditions. The influence of thermal contact stresses is shown to be moderate but essential for accurate durability assessment. The main contribution of this work lies in the development of an experimentally validated coupled thermomechanical model and an efficient engineering-oriented computational algorithm for composite cylindrical structures under combined loading conditions. The proposed methodology provides a reliable tool for the design, modernization, and residual life assessment of locomotive frames and can be extended to other transport and mechanical systems operating under similar thermomechanical environments.

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Published

2026-04-22

Issue

Vol. 7 No. 1 (2026): Reports in Mechanical Engineering

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Articles

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How to Cite

Model of Contact Temperature Fields in a Composite Cylinder of a Modernized Locomotive Frame. (2026). Reports in Mechanical Engineering, 7(1), 199-214. https://doi.org/10.31181/rme558