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Quadrilateral Finite Element with Embedded Strong Discontinuity for Failure Analysis of Solids
Dujc, Jaka (Avtor), Brank, Boštjan (Avtor), Ibrahimbegović, Adnan (Avtor)

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Izvleček
We present a quadrilateral finite element with discontinuous displacement fields that can be used to model material failure in 2d brittle and ductile solids. The element provides mesh-objective results. The element's kinematics can represent linear displacement jumps along the discontinuity line in both normal and tangential directions to the line. The cohesive law in the discontinuity line is based on rigid-plasticity model with softening. The material of the bulk of the element is described by hardening plasticity model. Static condensation of the jump-in-displacements kinematic parameters is made, which provides standard form of the element stiffness matrix. However, in order to make the discontinuity growth algorithm more robust, the continuity of the failure line between the elements is enforced. Several numerical tests show that the element can describe constant and linear separation modes without spurious transfer of the stresses. Other numerical examples represent failure of pure concrete, composite and metal 2d solids.

Jezik:Angleški jezik
Ključne besede:civil engineering, embedded discontinuity, material failure, softening
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:FGG - Fakulteta za gradbeništvo in geodezijo
Leto izida:2010
Založnik:Techno Press
Št. strani:str. 223-260
Številčenje:Letn. 69, št. 3
UDK:624.07
ISSN pri članku:1526-1492
DOI:10.3970/cmes.2010.069.223 Povezava se odpre v novem oknu
COBISS.SI-ID:5301345 Povezava se odpre v novem oknu
Število ogledov:354
Število prenosov:117
Metapodatki:XML RDF-CHPDL DC-XML DC-RDF
 
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Gradivo je del revije

Naslov:Computer modeling in engineering & sciences
Skrajšan naslov:Comput. model. eng. sci.
Založnik:Tech Science Press
ISSN:1526-1492
COBISS.SI-ID:1931361 Novo okno

Sekundarni jezik

Jezik:Angleški jezik
Ključne besede:gradbene konstrukcije, vgrajena neveznost, porušitev materiala, mehčanje

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