Contact pressure during the draft of high workpieces

Authors: Denisova A.F.
Published in issue: #12(29)/2018
DOI: 10.18698/2541-8009-2018-12-417
Category: Mechanical Engineering and Machine Science | Chapter: Forming Technologies and Equipment
Keywords: contact pressure, draft, normal tension, finite element method, friction zone, QForm, load cell, contact tension, high workpiece
Published: 20.12.2018

The results of experimental studies for determine the contact pressure during the draft of high workpieces by the method of point messes of Gerhard Nebe, Ph.D. in technology (Dr.-Ing.), were analyzed. It is shown that experimental diagrams of contact pressures have qualitative differences from the known analytical solutions: there are contact pressure peaks at the edge of the sample. The purpose of the research is to identify the causes affecting the nature of the change in normal tension in high workpieces. It is shown that the results of finite element modeling have a good qualitative congruence with the results of experimental studies of G. Nebe. An attempt to explain physically the existence of pressure peaks at the edge of the workpiece was made. The results of the research complement the existing data on contact pressures during the draft of high workpieces.

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