Jaka Dujc (Avtor), Boštjan Brank (Avtor), Adnan Ibrahimbegović (Avtor)

Povzetek

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.

Ključne besede

gradbene konstrukcije;vgrajena neveznost;porušitev materiala;mehčanje;civil engineering;embedded discontinuity;material failure;softening;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UL FGG - Fakulteta za gradbeništvo in geodezijo
Založnik: Techno Press
UDK: 624.07
COBISS: 5301345 Povezava se bo odprla v novem oknu
ISSN: 1526-1492
Št. ogledov: 2067
Št. prenosov: 557
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarni jezik: Angleški jezik
Sekundarne ključne besede: gradbene konstrukcije;vgrajena neveznost;porušitev materiala;mehčanje;
Vrsta datoteke: application/pdf
Vrsta dela (COBISS): Delo ni kategorizirano
Strani: str. 223-260
Letnik: ǂLetn. ǂ69
Zvezek: ǂšt. ǂ3
Čas izdaje: 2010
DOI: 10.3970/cmes.2010.069.223
ID: 8312996