Modelado tridimensional de rugosidad superficial para el proceso de bruñido

Resumen

Ball burnishing is a plastic deformation

process that improves the surface quality of

mechanical parts decreasing roughness. The

surface roughness is an important parameter to

study; it affects friction, lubrication and wear.

In this study, a general methodology for finite

element and a programming routine based on

Parametric Design Language was developed and

validated. This methodology is useful to generate

parametric models of three-dimensional rough

surfaces using a finite element commercial

software. The routine produces a random surface

roughness using the mean (x) and standard

deviation (s) of a normal distribution of real

surface roughness. The routine was used to

generate roughness models of rectangular and

cylindrical specimens. The nodal density for

generating roughness and the repeatability

for a given surface finish were evaluated to

optimize the modeled surface roughness. The

numerical results show a good correlation to the

experimental results. In future, the routine can

be used to generate models through the finite

element method to simulate any machining

process with random roughness thus enabling a

less expensive way to study the processes than

those of experimental tests.