



Avtorstvo: 
Boštjan BRANK // 1.01 Izvirni znanstveni članek

Leto: 
2000 
Citat: 
BRANK, Boštjan, CARRERA, Erasmo. Multilayered shell
finite element with interlaminar continuous shear stresses : a refinement of the
ReissnerMindlin formulation. Int. j. numer. methods eng., 2000, vol. 48,
n. 6, str. 843874, graf. prikazi. 
Povzetek: 
A finite element formulation for
refined linear analysis of multilayered shell structures of moderate thickness
is presented. An underlying shell model is a direct extension of the firstorder
sheardeformation theory of ReissnerMindlin type. A refined theory with seven
unknown kinematic fields is developed; (i) by introducing an assumption of a
zigzag (i..e. layerwise linear) variation of displacement field through the
thickness, and (ii) by assuming an independent transverse shear stress fields in
each layer in the framework of Reissner's mixed varianational principle. The
introduced transverse shear stress unknowns are eliminated on the crosssection
level. At this process, the interlaminar equilibrium conditions (i.e. the
interlaminar shear stress continuity continuity conditions) are imposed. As a
result, the weak form of constitutive equations (the socalled weak form of
Hooke's law) is obtained for the transverse strainstransverse stress resultants
relation. A finite element approximation is based on the fournodedisoparametric
element. To eliminate the shear locking effect, the assumed strain variational
concept is used. Performance of the derived finite element is illustrated with
some numerical examples. The results are compared with the exact
threedimensional solutions, as well as with the analytical and numerical
solutions obtained by the classical, the firstorder and some representative
refined models [COBISS.SIID 947041]

Tipologija: 
1.01 Izvirni znanstveni članek 
COBISS ID 
947041 Polni zapis iz sistema COBISS 
Vpisal 2009/06/10 11:56

