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Document type:
Zeitschriftenaufsatz 
Author(s):
Hoffmann, H.; Vogl, C. 
Title:
Determination of true stress-strain-curves and normal anisotropy in tensile tests with optical strain measurement 
Abstract:
This paper describes a method to measure the flow curve which undergoes necking and normal anisotropy as a function of equivalent strain using an optical measurement system. The flow stress was determined by modifying Siebel and Schwaigerer's model. Normal anisotropy was regarded as a function of equivalent strain. Comparing with the experiment of the stretch forming process, the simulation using improved material properties shows the better strain distribution than the results using conventiona...    »
 
Keywords:
Anisotropy; FEM; Tensile test 
Journal title:
CIRP Annals - Manufacturing Technology 
Year:
2003 
Journal volume:
52 
Journal issue:
Pages contribution:
217-220 
Covered by:
Scopus 
Reviewed:
ja 
Language:
en 
E-ISSN:
00078506 
TUM Institution:
Lehrstuhl für Umformtechnik und Gießereiwesen