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Numerical Simulation and Analysis for 3D Elastic-Plastic Rough Contacts

[+] Author Affiliations
Fan Wang, Leon M. Keer, Q. Jane Wang

Northwestern University

Paper No. IMECE2006-14663, pp. 125-134; 10 pages
doi:10.1115/IMECE2006-14663
From:
  • ASME 2006 International Mechanical Engineering Congress and Exposition
  • Tribology
  • Chicago, Illinois, USA, November 5 – 10, 2006
  • Conference Sponsors: Tribology Division
  • ISBN: 0-7918-4782-9 | eISBN: 0-7918-3790-4
  • Copyright © 2006 by ASME

abstract

A 3D elastic-plastic rough contact (EPC) solution and code is developed using a modified semi-analytical method. The total surface deflection is induced by the contact pressure and plastic strain. A purely elastic contact field and a residual field arising from the plastic deformation are simulated iteratively to gain the final approximate solution for the elastic-plastic rough contact. Frictionless normal contact between a rigid ball and an elastic-plastic half space with polished, turned, and honed rough surfaces was numerically simulated using the developed EPC code. The distributions of surface pressures, real contact area, total stresses, residual stresses, residual displacements, and plastic strains are obtained through simulation. The effects of surface roughness, wavelength, and plastic hardening behavior upon the calculated results are analyzed.

Copyright © 2006 by ASME

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