Application of non-associated flow rule for sheet metal forming (CROSBI ID 521727)
Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Cvitanić, Vedrana ; Lozina, Željan ; Vlak, Frane
engleski
Application of non-associated flow rule for sheet metal forming
Sheet metals usually exhibit a certain initial plastic anisotropy mainly due to crystallographic texture that is caused by production rolling steps and annealing. Anisotropy should be considered carefully for accurate analysis of sheet metal forming operations. A common approach in metal plasticity theory is assumption that the yield function and plastic potential function are identical, an assumption known as the associated flow rule. Realistic elasto-plastic anisotropic constitutive models based on associated flow rule require rather complex anisotropic yield functions. In this article anisotropic model that is based on non-associated flow rule is proposed and analyzed on constitutive and algorithmic level considering material characteristics of aluminum alloy Al 2090-T3. It should be pointed out that application of non-associated flow rule refers for examination of theoretical considerations that are commonly interpreted as validation of associated flow rule.
anisotropic constitutive model ; anisotropic yield function ; non-associated flow rule ; numerical integration
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Podaci o prilogu
169
2006.
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objavljeno
953-96243-8-X
Podaci o matičnoj publikaciji
Proceedings of the 5th International Congress of Croatian Society of Mechanics
Matejicek, Franjo
Zagreb: CROATIAN SOCIETY OF MECHANICS
Podaci o skupu
5th INTERNATIONAL CONGRESS OF CROATIAN SOCIETY OF MECHANICS
predavanje
21.09.2006-23.09.2006
Trogir, Hrvatska