Enhanced granular medium-based tube press hardening
Soft Condensed Matter
2016-08-03 v1
Abstract
Active and passive control strategies of internal pressure for hot forming of tubes and profiles with granular media are described. Force transmission and plastic deformation of granular medium is experimentally investigated. Friction between tube, granular medium and die as also the external stress field are shown to be essential for the process understanding. Wrinkling, thinning and insufficient forming of the tube establishes the process window for the active pressure process. By improving the punch geometry and controlling tribological conditions, the process limits are extended. Examples for the passive pressure process reveal new opportunities for hot forming of tubes and profiles.
Cite
@article{arxiv.1608.00807,
title = {Enhanced granular medium-based tube press hardening},
author = {Hui Chen and Sigrid Hess and Jan Haeberle and Sebastian Pitikaris and Philip Born and Alper Güner and Matthias Sperl and A. Erman Tekkaya},
journal= {arXiv preprint arXiv:1608.00807},
year = {2016}
}
Comments
4 pages, 11 figures