Physical and Numerical Simulation of Contact Mechanics of Spark-eroded Tool Steel with Controlled Roughness

Ignacio Cueva, Miguel Ángel Ramírez, Carlos Gabriel Figueroa, Hadassa Amelia Juárez, Rafael Schouwenaars

2018

Abstract

Spark erosion is a convenient process to produce dies with complex shapes from hard tool materials used under severe contact conditions. A controlled surface roughness can be produced by systematic variation of the milling parameters. This is used in the present work to prepare surfaces for contact mechanics testing and simulation, as will be shown by a newly developed method which performs between contact measurements and finite element simulations of experimentally characterised rough surfaces. In the experiment, the surface roughness of the tool steel is measured by means of optical profilometry. Using an instrumented indentation stage, contact is made with a spherical surface and the force-displacement curve measured. The surface geometry is measured again to detect the effect of plastic deformation. To execute the numerical simulation, the measured surface topography is transferred, one on one, to a finite element mesh with 237169 surface nodes. The method allows to perform precise simulation of the contact of real surfaces, instead of approximate or numerically simulated ones, limited only by the spatial resolution of the measurement.

Paper Citation

in Harvard Style

Cueva I., Ramírez M., Figueroa C., Juárez H. and Schouwenaars R. (2018). Physical and Numerical Simulation of Contact Mechanics of Spark-eroded Tool Steel with Controlled Roughness.In The Second International Conference on Materials Chemistry and Environmental Protection - MEEP, ISBN 978-989-758-360-5, pages 180-183. DOI: 10.5220/0008187301800183

in Bibtex Style

@conference{meep18,
author={Ignacio Cueva and Miguel Ángel Ramírez and Carlos Gabriel Figueroa and Hadassa Amelia Juárez and Rafael Schouwenaars},
title={Physical and Numerical Simulation of Contact Mechanics of Spark-eroded Tool Steel with Controlled Roughness},
booktitle={The Second International Conference on Materials Chemistry and Environmental Protection - MEEP,},
year={2018},
pages={180-183},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0008187301800183},
isbn={978-989-758-360-5},
}

in EndNote Style

TY - CONF

JO - The Second International Conference on Materials Chemistry and Environmental Protection - MEEP,
TI - Physical and Numerical Simulation of Contact Mechanics of Spark-eroded Tool Steel with Controlled Roughness
SN - 978-989-758-360-5
AU - Cueva I.
AU - Ramírez M.
AU - Figueroa C.
AU - Juárez H.
AU - Schouwenaars R.
PY - 2018
SP - 180
EP - 183
DO - 10.5220/0008187301800183