Analysis of Contact Stresses in High Speed Sheet Metal Forming Processes
Loading...
Date
2012-07-17
Journal Title
Journal ISSN
Volume Title
Publisher
Alternative Title(s)
Abstract
In high speed metal forming, determination of contact stresses applied to forming dies is
necessary in order to identify the requirements to the die material. Contact stresses
greatly control the die design due to their effects on die durability. Very high contact
stresses and fracture under impulsive loading have been reported in literature on contact
type of high speed forming. In pulsed forming operations using electro-hydraulic forming
(EHF), a work piece is often accelerated into the die cavity of a desired shape resulting in
a substantial impact pressure on the die. Contact algorithm and mesh size play an
essential role in providing accurate results in such high speed processes. Using the soft
contact model with an appropriate control of the penetration value provided stable and
consistent contact stresses.
Description
Table of contents
Keywords
contact, die stress, high speed forming