ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Formability and springback of the automotive aluminum alloy sheet, 6K21-T4, in the sheetforming process were numerically investigated utilizing the combined isotropic-kinematic hardeninglaw based on the modified Chaboche model. To account for the anisotropic plastic behavior, thenon-quadratic anisotropic yield stress potential, Yld2004-18p was considered. In order to characterizethe mechanical properties, uni-axial tension tests were performed for the anisotropic yielding andhardening behavior, while uni-axial tension/compression tests were performed for the Bauschingerand transient behavior. The Erichsen test was carried out to partially obtain forming limit strains andFLD was also calculated based on the M-K theory to complete the FLD. The failure location duringsimulation was determined by comparing strains with FLD strains. For verification purposes, theautomotive hood outer panel was stamped in real. After forming, the amount of draw-in, thinning andspringback were measured and compared with numerical simulation results
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/54/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.345-346.857.pdf
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