Naslov
Efficient modelling of nonlinear hardening responses for elastoplastic shell analyses

Autori
Sorić, Jurica ; Tonković, Zdenko ; Montag, Ulrich

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

Izvornik
Proceedings of the 2nd Congress of Croatian Society of Mechanics / Marović, P. ; Sorić, J. ; Vranković, N. - : Hrvatsko društvo za mehaniku, Zagreb, 1997, 69-76

Skup
The 2nd Congress of Croatian Society of Mechanics

Mjesto i datum
Supetar, Hrvatska, 18.09.1997. - 20.09.1997

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Elastoplastic shell analysis; Reissner-Mindlin type kinematic model; highly nonlinear hardening responses; consistent linearisation

Sažetak
An efficient computational strategy for modelling of highly nonlinear hardening responses in elastoplastic analysis of shell structures has been proposed. A closest point projection algorithm employing the Reissner-Mindlin type kinematic model, completely formulated in tensor notation, is presented. A consistent elastoplastic tangent modulus is derived which is found to be unsymmetrical. By using its symmetrized form the quadratic convergence rate in Newton Raphson iteration approach is exhibited, as the numerical examples illustrate. The integration algorithm has been implemented into a layered assumed strain isoparametric finite element, which also permits simulation of geometrical nonlinearity including finite rotations.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

POVEZANOST RADA