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A kinematically exact finite element formulation of elastic-plastic curved beams
Saje, Miran (Avtor), Turk, Goran (Avtor), Kalagasidu, A. (Avtor), Vratanar, Blaž (Avtor)

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Izvleček
A finite element, large displacement formulaton of static elastic-plastic analysis of slender arbitrarily curved planar beams is presented. Non-conservative and dynamic loads are at present not included. The Bernoulli hypothesis of plane cross--sections is assumed and the effect of shear strainsis neglected. Exact non-linear kinematic equations of curved beams, derived by Reissner are incorporated into a generalized principle of virtual work through Lagrangian multipliers. The only function that has to be interpolated in the finite element implementation is the rotation of the centroid axis of a beam. This is an important advantage over other classical displacement approaches since the field consistency problem and related locking phenomena do not arise. Numerical examples, comprising elastic and elastic-plastic, curved and straight beams, at large displacements and rotations, show very nice computational and accuracy characteristics of the present family of finite elements. The comparisons with other published results very clearly show the superior performance of the present elements

Jezik:Angleški jezik
Ključne besede:curved beam, plasticity, finite elements
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:FGG - Fakulteta za gradbeništvo in geodezijo
Leto izida:1998
Založnik:Elsevier
Št. strani:str. 197-214
Številčenje:Vol. 67, No. 4
UDK:539.3:624.072.33
ISSN pri članku:0045-7949
DOI:10.1016/S0045-7949(98)00046-7 Povezava se odpre v novem oknu
COBISS.SI-ID:406625 Povezava se odpre v novem oknu
Število ogledov:331
Število prenosov:102
Metapodatki:XML RDF-CHPDL DC-XML DC-RDF
 
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Gradivo je del revije

Naslov:Computers & Structures
Skrajšan naslov:Comput. struct.
Založnik:Elsevier
ISSN:0045-7949
COBISS.SI-ID:4419338 Novo okno

Sekundarni jezik

Jezik:Angleški jezik
Ključne besede:ukrivljeni nosilci, plastičnost, končni elementi

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