Stress state of a wheelset press joint
https://doi.org/10.46973/0201-727X_2025_4_44
Abstract
The most important indicator of the safe operation of a car wheelset is the strength of the press joint of the wheel and axle. During and after mounting the wheel on the axle, both parts of the joint are in a complex stress-strain state due to the presence of interference and significant forces of the press fit.
After pressing the wheel onto the axle, there are slip zones in the mating zone, which will naturally increase during operation due to significant dynamic loads. As a result, the adhesion area of the wheel and axle decreases and the stress state of the residual part of the joint increases as a response to the increased load on the adhesion area. Considering the tendency for the axle load to increase and the speed of the rolling stock to increase, this threatens to shift the wheel from the axle. Direct measurement of slip zones in operation is not possible.
This paper presents a computer simulation of the wheelset, analysis and assessment of the stress-strain state of the press joint. The presented research will be useful for making decisions on preventing a dangerous state during the interaction of a wheel and an axle in a press joint.
About the Author
S. V. Krotov
Rostov State Transport University (RSTU)
Russian Federation
Russian Federation
Krotov Sergey Viktorovich, Chair «Construction Mechanics», Candidate of Engineering Sciences, Associate Professor
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Review
For citations:
Krotov S.V. Stress state of a wheelset press joint. Vestnik Rostovskogo Gosudarstvennogo Universiteta Putej Soobshcheniya. 2025;(4):44-52. (In Russ.) https://doi.org/10.46973/0201-727X_2025_4_44
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