Simulación de esfuerzos Sxx durante repetidos ciclos de rayado sobre un sistema recubierto//Simulation of Sxx stresses in successive scratch cycles on a coated system

Authors

  • Eduardo A. Pérez-Ruiz Universidad de Ibagué, Programa de Ingeniería Mecánica. Ibagué.

Abstract

El principal objetivo de este estudio se centró en analizar por elementos finitos el efecto que tiene la repetición de varios ciclos de rayado en el mismo surco sobre la superficie de un sistema recubierto, en el comportamiento del esfuerzo normal Sxx. Para esto, se desarrolló un modelo de simulación que reproduce el contacto y deslizamiento de una partícula rígida sobre la superficie de un sistema recubierto y que permite la imposición de esfuerzos residuales, aumento de carga de contacto y aumento del coeficiente de fricción. Los resultados demuestran que el valor de esfuerzo obtenido en la superficie puede sobrepasar el valor de resistencia del recubrimiento en el primer ciclo de rayado, así como demuestran el papel protector que tienen los esfuerzos residuales en el recubrimiento.

Palabras claves: simulación  por MEF, ensayo de rayado, repetidos ciclos, esfuerzos.
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Abstract

The main objective of this study is to analyze by finite elements simulation, the effect in the normal stress Sxx behavior, due the several scratching cycles development in the same groove at the surface of a coated system. For this reason, a simulation model was development to reproducing the contact and slip of a rigid particle on the surface of a coated system, allowing the imposition of residual stresses, increase of contact load and increase of the coefficient of friction. The results demonstrate the protective role of the residual stresses in the coating, and demonstrate the importance of the increase of the normal load and the friction coefficient, which lead to obtain high level stresses along the scratch test.

Key words: FEM simulation, scratch test, successive cycles, stresses.

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Published

2017-07-14

How to Cite

1.
Pérez-Ruiz EA. Simulación de esfuerzos Sxx durante repetidos ciclos de rayado sobre un sistema recubierto//Simulation of Sxx stresses in successive scratch cycles on a coated system. Ing. Mec. [Internet]. 2017 Jul. 14 [cited 2025 Sep. 13];20(2):71-6. Available from: https://ingenieriamecanica.cujae.edu.cu/index.php/revistaim/article/view/560

Issue

Vol. 20 No. 2 (2017): mayo-agosto

Section

Original article

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