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