Simplified Mathematical Model of Changes in Sound Power Level Caused by the Perpendicular Forces that Arise When the Rail Contacts the Wheel with Flat

Petrenko, Viačeslav; Kukėnas, Vladas

doi:10.1007/978-3-030-38666-5_47

Cited by 1 publication

(4 citation statements)

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“…The results are presented in the Table 9 and in Figures 9-12. In this section, a numerical mathematical model (Petrenko and Kukėnas [11]) is considered, which is obtained by considering the dependence of the change in the forces acting on the change in sound pressure as a test/check in this work by physical experiment.…”

Section: Comparison Of Measurements Results With the Calculations Of ...mentioning

confidence: 99%

“…For the determination of forces (Petrenko and Kuk ėnas [11]), many different dynamic models of wheel-rail interaction, mathematical models of wheel with flat spot are used, all of them are connected by the fact that vertical dynamic impact forces caused by wheel or rail defects can increase 3-4 times as compared to the case when the wheel has no defects [11]. Currently, there is an increasing focus on research into the sound generated by wheel-rail interaction forces and attempts to use the results of this research to diagnose wheel defects.…”

Section: Tasks and Objectives Of The Workmentioning

confidence: 99%

“…It was determined that the change of the sound power depends on the changes of the forces that occur when the wheel and the rail are interacting. Based on this change, a theoretical model to determine the change of the sound power was established [11]. The objective of the work is to verify the numeric model noted for determining the sound power change by the physical experiment.…”

Section: Tasks and Objectives Of The Workmentioning

confidence: 99%

“…In the Tables 3 and 7, we can see that the results of the experiment differ two-fold from the theoretical calculations. This suggests that the article in preparation for the theoretical model (Petrenko and Kuk ėnas [11]) contains a mistake, and instead of Equations ( 4), ( 5) and ( 7), the following equations should be used:…”

Section: Atlasmentioning

confidence: 99%

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Analysis of Sound Power Level Changes Caused by Wheel with Flat Spot Using Numerical and Physical Experiment

et al. 2021

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Damage to the running surfaces of wheels on railways poses a threat to road safety. They can lead to accidents and disasters. Wheels with a flat spot are the biggest threat. The paper reviews problems that arise when wheels with a flat spot come into contact with a rail, and the methods of their detection and diagnosis. However, the known methods for their determination are still very complex and not precise enough. The research presented is based on previous theoretical studies, during which a simplified mathematical model of the normal force arising from the contact of a wheel with a flat spot with a rail, assuming that as a result of this, a change in sound power is caused was developed and theoretical calculations were performed. It theoretically determined wheel damage during rolling caused by wheel-induced changes in associated sound power, i.e., preliminary values of diagnostic parameters and applied methods. Although initial theoretical research already exists, there was a lack of physical experiments to support the validity of the results of the theoretical model. This work presents the original plan and methodology of the physical experiment performed. A physical experiment performed with the ATLAS LG system and sound pressure measuring equipment showed the suitability and applicability of the theoretical model for the determination of wheel damage.

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Section: Comparison Of Measurements Results With the Calculations Of ...mentioning

confidence: 99%

Section: Tasks and Objectives Of The Workmentioning

confidence: 99%

Section: Tasks and Objectives Of The Workmentioning

confidence: 99%

Section: Atlasmentioning

confidence: 99%

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