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Technical Brief

Wear modeling revisited using electrical analogy

[+] Author and Article Information
M. Hanief

Mechanical Engineering Department, National Institute of Technology Srinagar Jammu & Kashmir, India
hanief@nitsri.net

M. F. Wani

Mechanical Engineering Department, National Institute of Technology Srinagar Jammu & Kashmir, India
mfwani@nitsri.net

1Corresponding author.

ASME doi:10.1115/1.4035780 History: Received August 18, 2016; Revised January 08, 2017

Abstract

Electrical analogy has been used extensively in modeling various mechanical systems such as thermal and hydraulic systems other dynamic systems. However, wear modeling of a tribosystem using electrical analogy has not been reported so far. In this paper, an equivalent electrical analogous system is proposed to represent the wear process in a tribosystem. An analogous circuit is developed by mapping the wear process parameters to that of the electrical parameters. The circuit, thus, developed is solved by conventional electrical circuit theory. The material properties and operating conditions are taken into account by model parameters. Accordingly, a model equation in terms of model parameters is built to represent the wear rate. It is also demonstrated how this methodology can be used to take various system parameters into account. The proposed model is validated by using experimental data. The model being nonlinear, the model parameters are evaluated by Gauss-Newton algorithm. A comparison of proposed model with the experimental results is made on the basis of statistical methods-coefficient of determination (R2), mean square error (MSE) and mean absolute percentage error (MAPE). It is concluded from the comparison that the model is competent to predict the wear with high degree of accuracy. KEYWORDS: analogy; Gauss-Newton algorithm; modeling; running-in; tribosystem; wear.

Copyright (c) 2017 by ASME
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