



Avtorstvo: 
Boštjan BRANK // 1.08 Objavljeno predavanje na znanstveni konferenci

Leto: 
2002 
Citat: 
BRANK, Boštjan, KORELC, Jože, IBRAHIMBEGOVIĆ,
Adnan. Shell formulations with throughthethickness stretching. V: MANG, H. A.
(ur.), RAMMERSTORFER, F. G. (ur.), EBERHARDSTEINER, J. (ur.). Proceedings of
the Fifth World Congress on Computational Mechanics (WCCM V), July 712, 2002,
Vienna, Austria. Vienna, 2002: University of technology, Institute for
strenght of materials, Institute for lightweight structures and aerospace
engineering, str. 110, graf. prikazi. 
Povzetek: 
In this paper we discuss a
nonlinear shell model accounting for throughthethickness stretching and direct
use of 3d constituive equations. In such formulation the normal strain in the
thickness direction should be varying at least lineary through the thickness.
This can be achieved either by assuming a quadratic distribution of
displacements through the shell thickness, which leads to a 7parameter shell
model, or by enriching the throughthethickness strain of conventional shell
model by using enhanced assumed strain method or incompatible models method,
which lead to a 6parameter model. In this work we focus on two questions. First
we study a difference between a 7parameter model (with 3 displacements of the
midsurface, 2 additively updated rotations of the shell director and 2
throughthethickness parameters) with exact expression for the
GreenLagrangestrains and a 7parameter model where usual simplifications are
carried out by neglecting certain terms. The former of these two models can be
developed without difficulty mainly by using the symbolic manipulation.
[COBISS.SIID 1684065]

Tipologija: 
1.08 Objavljeno predavanje na znanstveni konferenci 
COBISS ID 
1684065 Polni zapis iz sistema COBISS 
Vpisal 2009/06/10 11:56

