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Title: Numerical Design Of Experiments to Analyse the Contact Conditions in Microforming

Abstract

In microforming, the so-called size effects can be observed in the material flow behaviour as well as in the frictional behaviour. In order to study the frictional behaviour a preliminary numerical characterization of the surface tribology has been carried out. A numerical design of experiments (DOE) is based on cylinder upsetting tests to define the influence of surface geometric properties on the resultant force. The simulations have been performed with the finite element software LS-Dyna by using an axisymmetric model. The mechanical behaviour of the cylinder specimen was described by an elastic-plastic material law, whereas the upsetting plates were assumed to be rigid. The workpiece is considered to be a copper alloy (CuZn10). The average roughness Ra and the average mean spacing Sm have been chosen to describe surface roughness properties. The tool and workpiece surfaces have been modelled using a sinusoidal profile. The five input parameters of the DOE are the amplitude and the period of the two sinusoidal profiles and the phase displacement between them. The analysis of variance shows the statistically significant parameters or interactions.

Authors:
; ; ;  [1]
  1. Institute FEMTO-ST, Applied Mechanics Laboratory, University of Franche-Comte, 24 rue de l'Epitaphe, 25000 Besancon (France)
Publication Date:
OSTI Identifier:
21061713
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 908; Journal Issue: 1; Conference: NUMIFORM 2007: 9. international conference on numerical methods in industrial forming processes, Porto (Portugal), 17-21 Jun 2007; Other Information: DOI: 10.1063/1.2740850; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; AXIAL SYMMETRY; COMPUTERIZED SIMULATION; COPPER ALLOYS; DEFORMATION; FINITE ELEMENT METHOD; FRICTION; L CODES; MATERIALS WORKING; PLASTICITY; PLATES; ROUGHNESS; SURFACES; TRIBOLOGY; ZINC ALLOYS

Citation Formats

Barbier, C., Thibaud, S., Picart, P., and Chambert, J. Numerical Design Of Experiments to Analyse the Contact Conditions in Microforming. United States: N. p., 2007. Web. doi:10.1063/1.2740850.
Barbier, C., Thibaud, S., Picart, P., & Chambert, J. Numerical Design Of Experiments to Analyse the Contact Conditions in Microforming. United States. doi:10.1063/1.2740850.
Barbier, C., Thibaud, S., Picart, P., and Chambert, J. Thu . "Numerical Design Of Experiments to Analyse the Contact Conditions in Microforming". United States. doi:10.1063/1.2740850.
@article{osti_21061713,
title = {Numerical Design Of Experiments to Analyse the Contact Conditions in Microforming},
author = {Barbier, C. and Thibaud, S. and Picart, P. and Chambert, J.},
abstractNote = {In microforming, the so-called size effects can be observed in the material flow behaviour as well as in the frictional behaviour. In order to study the frictional behaviour a preliminary numerical characterization of the surface tribology has been carried out. A numerical design of experiments (DOE) is based on cylinder upsetting tests to define the influence of surface geometric properties on the resultant force. The simulations have been performed with the finite element software LS-Dyna by using an axisymmetric model. The mechanical behaviour of the cylinder specimen was described by an elastic-plastic material law, whereas the upsetting plates were assumed to be rigid. The workpiece is considered to be a copper alloy (CuZn10). The average roughness Ra and the average mean spacing Sm have been chosen to describe surface roughness properties. The tool and workpiece surfaces have been modelled using a sinusoidal profile. The five input parameters of the DOE are the amplitude and the period of the two sinusoidal profiles and the phase displacement between them. The analysis of variance shows the statistically significant parameters or interactions.},
doi = {10.1063/1.2740850},
journal = {AIP Conference Proceedings},
number = 1,
volume = 908,
place = {United States},
year = {Thu May 17 00:00:00 EDT 2007},
month = {Thu May 17 00:00:00 EDT 2007}
}