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Development of Free Surface Roughness in Expanding/Contracting Cylinders

[+] Author Affiliations
Sergei Alexandrov

Russian Academy of Sciences, Moscow, Russia

Ken-Ichi Manabe, Tsuyoshi Furushima

Tokyo Metropolitan University, Tokyo, Japan

Paper No. ESDA2008-59138, pp. 239-244; 6 pages
  • ASME 2008 9th Biennial Conference on Engineering Systems Design and Analysis
  • Volume 2: Automotive Systems; Bioengineering and Biomedical Technology; Computational Mechanics; Controls; Dynamical Systems
  • Haifa, Israel, July 7–9, 2008
  • Conference Sponsors: International
  • ISBN: 978-0-7918-4836-4 | eISBN: 0-7918-3827-7
  • Copyright © 2008 by ASME


Microforming is a modern technology for fabricating very small metallic parts, such as micro-tubes, required in many sectors of industry. Free surface roughness of such components is a very important parameter since the roughness can be considered as the variation of component dimensions in this case. It is therefore of importance to understand an effect of process parameters and parameters of material models used to describe the evolution of roughness on the final result of theoretical predictions. To this end, it is possible to study the solution behavior of a simple problem even if it is not feasible for experimental verification. In the present paper, the solution to a classical problem of plasticity, expansion/contraction of a hollow cylinder, is combined with a finite element technique to predict the evolution of roughness at the free surface.

Copyright © 2008 by ASME



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