



Avtorstvo: 
Boštjan BRANK // 1.01 Izvirni znanstveni članek

Leto: 
1997 
Citat: 
BRANK, Boštjan, PERIĆ, Djordje, DAMJANIĆ, Frano. On
large deformations of thin elastoplastic shells: implementation of a finite
rotation model for quadrilateral shell element. Int. j. numer. methods
eng., 1997, vol. 40, str. 689726. 
Povzetek: 
A largedeformation model for
thin shells composed of elastoplastic material is presented in this work.
Formulation of the shell model, equivalent to the twodimensional Cosserat
continuum, is developed from the threedimensional continuum by employing
standard assumptions on the distribution of the displacement field in the shell
body. A model for thin shells is obtained by an approximation of terms
describing the shell geometry. Finite rotations of the director field are
described by a rotation vector formulation. An elastoplastic constitutive model
is developed based on the von Mises yield criterion and isotropic hardening. In
this work, attention is restricted to problems where strains remain small
allowing for all aspects of material identification and associated computational
treatment, developed for smallstrain elastoplastic models, to be transferred
easily to the present elastoplastic thinshell model. A finite element
formulation is based on the fournoded isoparametric element. A particular
attention is devoted to the consistent linearization of the shell kinematics and
elastoplastic material model, in order to achieve quadratic rate of asymptotic
convergence typical for the NewtonRaphsonbased solution procedures.
[COBISS.SIID 68711]

Tipologija: 
1.01 Izvirni znanstveni članek 
COBISS ID 
68711 Polni zapis iz sistema COBISS 
Vpisal 2009/06/10 11:56

