Analysis of lateral forces at the wheel-rail contact in cases of derailment Incidents

Lviv Research Institute of Forensic Expertise, 79000 Lviv, Lypynskoho str., 54, Ukraine

^* Corresponding author: ashabatig1992@gmail.com

Abstract

This article is dedicated to a thorough exploration of dynamic interactions within the intricate “wheel-rail” system during the occurrence of rolling stock derailments – a prominent and challenging aspect in the realm of railway transportation. Through meticulous analysis, the multifaceted factors influencing rolling stock derailments are meticulously dissected, embracing an in-depth scrutiny of dynamic interaction calculations. The investigation encompasses a comprehensive examination of various methodologies for comprehending the lateral forces that travel from the wheels of rolling stock to the rail track. By applying these methodologies, the study extrapolates insights from a real-world railway accident that transpired on Ukrainian territory. The research findings shine a light on a pivotal factor amplifying lateral forces: the gradual wear and tear of wheel flanges, coupled with the broadened gaps between axle boxes and the side frames of bogies. This intricate interplay ultimately leads to an augmentation in the angles at which wheel sets approach the rail track. Consequently, the research underscores the pressing need for an ongoing commitment to further exploration and the evolution of methodologies – a necessary endeavor to bolster rail safety comprehensively.