



Avtorstvo: 
Boštjan BRANK // 1.01 Izvirni znanstveni članek

Leto: 
2002 
Citat: 
BRANK, Boštjan. An energy conserving nonlinear
dynamic finite element formulation for flexible composite laminates. Comput.
struct.. [Print ed.], 2002, vol. 80, n. 7/8, str. 677689, ilustr.

Povzetek: 
Finite element formulation for nonlinear dynamic analysis of flexible
composite laminates is presented. A firstorder sheardeformation theory,
capable of modelling finite deformations and the finite rotations in
geometrically exact manner, is developed. A model allows simulation of a general
elastic material with varied mass density, degree of orthotrophy and elastic
material parameters and is suitable for nonlinear elastodynamic analysis of
relatively thin and flexible laminates composed of fibre reinforced composites.
Coupling of mindsurface and shelldirector fields is exactly taken into
account, so that the kinetic energy is not of simple quadratic form. An
implicit, one step, secondorder accurate numerical time integration scheme ia
applied. In particular, the energy and momentum conserving algorithm, which
exactly preserves the fundamental constants of the shelllike body motion, is
accomodated for composite laminates. Spatial finite element discretization is
based on the four noded multilayered shell finite element with isoparametric
interpolations. Fully discrete weak form of the initial boundary value problem
is consistently linearized in order to achieve a quadratic rate of asymptotic
convergence typical for the NewtonRaphson based solution procedures. Numerical
examples are presented. [COBISS.SIID 1616481]

Tipologija: 
1.01 Izvirni znanstveni članek 
COBISS ID 
1616481 Polni zapis iz sistema COBISS 
Vpisal 2009/06/10 11:56

