Communications - Scientific Letters of the University of Zilina 2025, 27(3):B170-B185 | DOI: 10.26552/com.C.2025.035

Justification of the Possibility for Extending the Service Life of Cast Parts of a Three-Axle Bogie Based on Results of the Running Strength Tests to Determine Their Loading

Rustam Rahimov ORCID...*, Diyor Zafarov ORCID...
Faculty of Railway Transport Engineering, Tashkent State Transport University, Tashkent, Republic of Uzbekistan

The article presents the results of research aimed at assessing the residual life and the possibility of extending the service life of cast parts of a UVZ-9M three-axle bogie used in six-axle scale test wagons. The tests have shown that the maximum stresses in the most stressed areas of the side frame, spring and pivot beams are within acceptable values, which indicates the presence of a residual life. The analysis of safety margin coefficients confirmed that the bogie elements have a significant reserve of operational characteristics. Calculations of the full service life of cast parts, performed based on the experimental data, demonstrated a sufficient residual life to prolong their use. It has been scientifically and experimentally proven that the cast parts of the UVZ-9M three-axle bogie can be safely operated for 5 years.

Keywords: scale test wagon, three-axle bogie, cast parts, stress, residual life, running strength test, safety margin
Grants and funding:

The authors received no financial support for the research, authorship and/or publication of this article.

Conflicts of interest:

The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

Received: January 20, 2025; Accepted: March 22, 2025; Prepublished online: April 16, 2025; Published: July 1, 2025  Show citation

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Rahimov, R., & Zafarov, D. (2025). Justification of the Possibility for Extending the Service Life of Cast Parts of a Three-Axle Bogie Based on Results of the Running Strength Tests to Determine Their Loading. Communications - Scientific Letters of the University of Zilina, 27(3), B170-185. doi: 10.26552/com.C.2025.035
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