Naslov
Application of non-associated flow rule for sheet metal forming

Autori
Cvitanić, Vedrana ; Lozina, Željan ; Vlak, Frane

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of the 5th International Congress of Croatian Society of Mechanics / Matejicek, Franjo - Zagreb : CROATIAN SOCIETY OF MECHANICS, 2006

ISBN
953-96243-8-X

Skup
5th INTERNATIONAL CONGRESS OF CROATIAN SOCIETY OF MECHANICS

Mjesto i datum
Trogir, Hrvatska, 21.09.2006. - 23.09.2006

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
anisotropic constitutive model ; anisotropic yield function ; non-associated flow rule ; numerical integration

Sažetak
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.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo, Temeljne tehničke znanosti

POVEZANOST RADA