A New Combined Model for considering the Plasticity Effects in Contacting Asperities
Joint Authors
Amini Sarabi, Mohammad
Hosseini Tehrani, Parisa
Source
Mathematical Problems in Engineering
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-11-18
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
Wheel-rail contact in railway engineering is an important topic.
Due to different materials and surface roughness of wheel and rail, the contact characteristics can alter significantly.
This article aims to investigate the effects of surface roughness and asperities on the contact parameters such as contact area, contact force, and contact stiffness.
The lateral contacts between asperities are assumed to be the general contact condition.
Azimuthal and contact angles distributions are assumed to be spherical harmonic distribution.
This assumption is compatible with the asperity distribution on the wheel and the rail surfaces.
Besides, a new combined model is developed to cover the stick-slip and the plasticity effects in contacting asperities.
The results of the presented model offer very good estimations for the asperities contact characteristics, especially at the small-contact area and separation where high-contact pressure and plastic deformation usually exist.
American Psychological Association (APA)
Amini Sarabi, Mohammad& Hosseini Tehrani, Parisa. 2020. A New Combined Model for considering the Plasticity Effects in Contacting Asperities. Mathematical Problems in Engineering،Vol. 2020, no. 2020, pp.1-12.
https://search.emarefa.net/detail/BIM-1195302
Modern Language Association (MLA)
Amini Sarabi, Mohammad& Hosseini Tehrani, Parisa. A New Combined Model for considering the Plasticity Effects in Contacting Asperities. Mathematical Problems in Engineering No. 2020 (2020), pp.1-12.
https://search.emarefa.net/detail/BIM-1195302
American Medical Association (AMA)
Amini Sarabi, Mohammad& Hosseini Tehrani, Parisa. A New Combined Model for considering the Plasticity Effects in Contacting Asperities. Mathematical Problems in Engineering. 2020. Vol. 2020, no. 2020, pp.1-12.
https://search.emarefa.net/detail/BIM-1195302
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1195302