Indian Journal of Science and Technology

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Role of Exponential and Power Law formulations in Contact Stress


Affiliations
1 Department of Mechanical Engineering, Zanjan Branch, Islamic Azad University, Zanjan, Iran, Islamic Republic of
2 Department of Mechanical Engineering, Sharif University of Technology, PO Box 11365–9567, Tehran, Iran, Islamic Republic of
3 Department of Mechanical Engineering, Majlesi Branch, Islamic Azad University, Isfahan, Iran, Islamic Republic of
4 School of Mechanical Engineering, Sharif University of Technology, Tehran, Iran, Islamic Republic of
5 Department of Industrial Intelligence Research Group. ACECR, Zanjan Branch, Iran, Islamic Republic of
 

Analyzing contact stress in rails and wheels are very important in mechanical and railway engineering. In this paper, new formulations of the contact stress are presented for two rolling bodies by exponential and power law forms semi- analytically. Innovative elastic wheel-rail contact models and FE Modeling are proposed. The present model assumes the collection of rail and wheel as elastic deformable bodies and needs numerical and novel analytical solutions. Results of this work are close to the Hertz Stress, previous published work and FEM results, in which good agreements are found among the results. So, we can rely on this method and their results. With this approach, suitable results will be achieved. Important novelty of this research is presentation of new analytical formulations in the Power Law (PL) and Exponential Forms (EF) for obtaining contact stress in the rolling bodies.

Keywords

Contact Stress, Exponential and Power Law Forms, Hertz’s Elliptic Rolling Bodies
User

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  • Role of Exponential and Power Law formulations in Contact Stress

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Authors

Vahid Monfared
Department of Mechanical Engineering, Zanjan Branch, Islamic Azad University, Zanjan, Iran, Islamic Republic of
Mohammadhassan Hassan
Department of Mechanical Engineering, Sharif University of Technology, PO Box 11365–9567, Tehran, Iran, Islamic Republic of
Saeed Daneshmand
Department of Mechanical Engineering, Majlesi Branch, Islamic Azad University, Isfahan, Iran, Islamic Republic of
Farshad Taheran
School of Mechanical Engineering, Sharif University of Technology, Tehran, Iran, Islamic Republic of
Amirhossein Monfared
Department of Industrial Intelligence Research Group. ACECR, Zanjan Branch, Iran, Islamic Republic of

Abstract


Analyzing contact stress in rails and wheels are very important in mechanical and railway engineering. In this paper, new formulations of the contact stress are presented for two rolling bodies by exponential and power law forms semi- analytically. Innovative elastic wheel-rail contact models and FE Modeling are proposed. The present model assumes the collection of rail and wheel as elastic deformable bodies and needs numerical and novel analytical solutions. Results of this work are close to the Hertz Stress, previous published work and FEM results, in which good agreements are found among the results. So, we can rely on this method and their results. With this approach, suitable results will be achieved. Important novelty of this research is presentation of new analytical formulations in the Power Law (PL) and Exponential Forms (EF) for obtaining contact stress in the rolling bodies.

Keywords


Contact Stress, Exponential and Power Law Forms, Hertz’s Elliptic Rolling Bodies

References





DOI: https://doi.org/10.17485/ijst%2F2014%2Fv7i1%2F46673