Modeling fracture in elasto-plastic solids by embedded-discontinuity stress-hybrid finite element formulation

Dujc, Jaka (avtor), Brank, Boštjan (avtor)

The Hellinger-Reissner principle is applied to derive a hybrid-mixed quadrilateral finite element with embedded-discontinuity in displacements, which can model a discrete crack (interface) within the element, and its sliding (and opening). The chosen material models are elasto-plasticity with hardening for the bulk, and traction-separation plasticity with softening for the interface. The latter model describes localized material failure and relates cohesion degradation with the fracture energy. The fulfillment of the inelastic relations at the bulk’s integration points is performed by a stress-driven update algorithm. The stress and embedded-discontinuity kinematic parameters are condensed on the element level, allowing for an efficient implementation.

• Jezik: Angleški jezik
• Ključne besede: civil engineering, structures, 2D solid, elasto-plasticity, embedded-discontinuity, fracture modelling, softening-plasticity, stress-hybrid quadrilateral, plasticity, Hellinger-Reissner
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FGG - Fakulteta za gradbeništvo in geodezijo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2022
• Št. strani: Str. 677–693
• Številčenje: Vol. 29, no. 5
• PID: 20.500.12556/RUL-120988
• UDK: 624.07:004
• ISSN pri članku: 1537-6494
• DOI: 10.1080/15376494.2020.1786755
• COBISS.SI-ID: 23001859
• Datum objave v RUL: 28.09.2020

Gradivo je del revije

• Naslov: Mechanics of advanced materials and structures
• Skrajšan naslov: Mech. adv. mat. struct.
• Založnik: Taylor and Francis
• ISSN: 1537-6494
• COBISS.SI-ID: 24292357

Licence

• Licenca: CC BY-NC-ND 4.0, Creative Commons Priznanje avtorstva-Nekomercialno-Brez predelav 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by-nc-nd/4.0/deed.sl
• Opis: Najbolj omejujoča licenca Creative Commons. Uporabniki lahko prenesejo in delijo delo v nekomercialne namene in ga ne smejo uporabiti za nobene druge namene.

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: gradbeništvo, konstrukcije, plastičnost, Hellinger-Reissner, modeliranje odpovedi materiala, vgrajena neveznost

Projekti

• Financer: ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
• Številka projekta: J2-1722
• Naslov: Numerično modeliranje širjenja razpok v krhkih in duktilnih konstrukcijah