FEM Simulation of a Friction Testing Metliod Based on Combined Forward Conical Can-Backward Straight Can Extrusion-Reference-Cited by-同舟云学术

FEM Simulation of a Friction Testing Metliod Based on Combined Forward Conical Can-Backward Straight Can Extrusion

Published:1998-10-01 Issue:4 Volume:120 Page:716-723
ISSN:0742-4787
Container-title:Journal of Tribology
language:en
Short-container-title:

Author:

Nakamura Tamotsu¹,Bay Niels²,Zhang Zhi-Liang³

Affiliation:

1. Department of Mechanical Engineering, Shizuoka University, 3-5-1 Johoku, Hamamatsu, 432, Japan

2. Institute of Manufacturing Engineering, Bldg. 425, Technical University of Denmark, DK-2800 Lyngby, Denmark

3. Department of Mechanical Engineering, Faculty of Engineering, Shizuoka University, 3-5-1 Johoku, Hamamatsu, 432, Japan

Abstract

A new friction testing method based on combined forward conical can-backward straight can extrusion is proposed in order to evaluate friction characteristics in severe metal forming operations. By this method the friction coefficient along the conical punch surface is determined knowing the friction coefficient along the die wall. The latter is determined by a combined forward and backward can extrusion of straight cans. Calibration curves determining the relationship between punch travel, can heights, and friction coefficient for the two tests are calculated based on a rigid-plastic FEM analysis. Experimental friction tests are carried out in a mechanical press with aluminium alloy A6061 as the workpiece material and different kinds of lubricants. They confirm that the theoretical analysis results in reasonable values for the friction coefficient.

Publisher

ASME International

Subject

Surfaces, Coatings and Films,Surfaces and Interfaces,Mechanical Engineering,Mechanics of Materials

Link

http://asmedigitalcollection.asme.org/tribology/article-pdf/120/4/716/5549354/716_1.pdf

Reference10 articles.

1. Bay N. , WibomO., and NielsenJ. Aa., 1995, “A New Friction and Lubrication Test for Cold Forging,” Annals of the CIRP, Vol. 44-1, pp. 217–221.

2. Geiger, R., 1976, “Der Stoffluß beim kombinierten Napffließpressen,” Berichte aus dem Institut fu¨r Umformtechnik, Universita¨t Stuttgart, Reprografie Mayer, pp. 5–197.

3. Isogawa S. , KimuraA., and TozawaY., 1992, “Proposal of an Evaluating Method on Lubrication,” Annals of the CIRP, Vol. 41-1, pp. 263–266.

4. Lahoti, G. D., and Altan, T., 1982, “Ring and Spike Tests for Evaluating Lubricants,” Battelle Topical Report, Columbus, Ohio, p. 11.

5. Nakamura T. , BayN., and ZhangZ. L., 1997, “FEM Simulation of Friction Testing Method based on Combined Forward Rod-Backward Can Extrusion,” ASME JOURNAL OF TRIBOLOGY, Vol. 119, No. 3, pp. 501–506.

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