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RESEARCH PAPERS

Dimensional Control of Stampings by Grid Strain Measurement

[+] Author and Article Information
J. L. Duncan, S. M. Panton

Department of Mechanical Engineering, University of Auckland, Auckland, New Zealand

Z-T. Zhang

Mechanical Engineering and Applied Mechanics, University of Michigan, Ann Arbor, Michigan

J. Manuf. Sci. Eng 121(1), 84-86 (Feb 01, 1999) (3 pages) doi:10.1115/1.2830579 History: Received January 01, 1995; Revised October 01, 1997; Online January 17, 2008

Abstract

This paper proposes that the dimensional control of stampings requires not only surface measurement but also measurement of the strain distribution in the part. A simple model of forming a smooth panel over a die is presented and used to show how small changes in variables such as friction can affect “shape fixability” and dent resistance. It is argued that this variability in stampings can be controlled by comparing a measured strain distribution with one specified in the design stage.

Copyright © 1999 by The American Society of Mechanical Engineers
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