DSpace
 

DSpace at IIT Bombay >
IITB Publications >
Proceedings papers >

Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/100/1693

Title: A better sheet-formability test
Authors: NARASIMHAN, K
MILES, MP
WAGONER, RH
Issue Date: 1995
Publisher: ELSEVIER SCIENCE SA LAUSANNE
Citation: JOURNAL OF MATERIALS PROCESSING TECHNOLOGY,50,385-394
Abstract: Instability predictions are important in sheet-metal forming processes, one such instability being splitting failures due to localized necking. The majority of such sheet-metal industrial splitting failures occur near to the plane-strain state. Therefore, sheet-metal industries have always been looking for an ''ideal'' formability test which allows them to evaluate sheets for their ability to resist splitting failures under near plane-strain conditions. Several formability tests have been developed in the past but none have been very successful. Presently, a new test has been designed, constructed and used to evaluate the formability of different sheet materials. The results from this new test are compared with standard limiting-dome-height (LDH) tests and finite-element simulations. The results show that the new test is more reproducible, more closely follows the desirable plane strain path and takes roughly 1/6 of the time to perform relative to the LDH test. Strain measurements and finite-element simulations have revealed that the improvements are a result of the new test geometry, which produces a more stable and repeatable plane-strain state near to the splitting failure locations. The failure heights in the new tests were predicted using a section analysis finite-element program, SHEET-S.
URI: http://dx.doi.org/10.1016/0924-0136(94)01400-U
http://dspace.library.iitb.ac.in/xmlui/handle/10054/14861
http://hdl.handle.net/100/1693
ISSN: 0924-0136
Appears in Collections:Proceedings papers

Files in This Item:

There are no files associated with this item.

View Statistics

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

 

Valid XHTML 1.0! DSpace Software Copyright © 2002-2010  Duraspace - Feedback