Contacto elastoplástico entre superficies rugosas con distribución de Gauss y exponencial

  1. A. Sánchez-Rodríguez 1
  2. J.S. Echeverría-Villagómez 2
  3. R. Lesso-Arroyo 3
  4. F.J. García-Rodríguez 3
  5. R. Salas-Zuñiga 4
  1. 1 Centro de Ingeniería y Desarrollo Industrial (CIDESI)
  2. 2 Instituto Tecnológico de Celaya
  3. 3 Instituto Tecnológico de Celaya, Departamento de Ingeniería Mecánica
  4. 4 Centro de Desarrollo de Tecnología (CIDET)
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Journal:
Ingeniería, investigación y tecnología

ISSN: 1405-7743,  2594-0732

Year of publication: 2012

Volume: 13

Issue: 3

Type: Article

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Abstract

In order to model the elastic-plastic contact between rough surfaces, the exponential probabilistic distribution function of asperity heights, proposed by Greenwood and Williamson (1966), is analyzed as an approach of the Gaussian distribution function, and it is found to be impractical in most studied cases. The exponential probabilistic distribution modified function proposed by Polycarpou and Etsion (1999) is applied to the recent model of elastic-plastic contact of Kogut and Etsion (2004), to facilitate the calculations in obtaining the contact parameters (real area, normal load and mean pressure) using Simpson square method subroutines showing results with a minimum error in the order of 2.2%. The results show that it is possible to simplify the modeling and simulation of more complex contact cases and the determination of other parameters of contact.

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