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| Avtorstvo: |
Boštjan BRANK // 1.01 Izvirni znanstveni članek
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| Leto: |
2002 |
| Citat: |
BRANK, Boštjan. An energy conserving non-linear
dynamic finite element formulation for flexible composite laminates. Comput.
struct.. [Print ed.], 2002, vol. 80, n. 7/8, str. 677-689, ilustr.
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| Povzetek: |
Finite element formulation for non-linear dynamic analysis of flexible
composite laminates is presented. A first-order shear-deformation 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 non-linear elasto-dynamic analysis of
relatively thin and flexible laminates composed of fibre- reinforced composites.
Coupling of mind-surface and shell-director fields is exactly taken into
account, so that the kinetic energy is not of simple quadratic form. An
implicit, one step, second-order accurate numerical time integration scheme ia
applied. In particular, the energy and momentum conserving algorithm, which
exactly preserves the fundamental constants of the shell-like 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 Newton-Raphson based solution procedures. Numerical
examples are presented. [COBISS.SI-ID 1616481]
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| Tipologija: |
1.01 Izvirni znanstveni članek |
| COBISS ID |
1616481 Polni zapis iz sistema COBISS |
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Vpisal 2009/06/10 11:56
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