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Titolo:
Cohesive zone modelling of crack growth in polymers - Part 2 - Numerical simulation of crack growth
Autore:
Pandya, KC; Ivankovic, A; Williams, JG;
Indirizzi:
BP, Grangemouth FK3 9XH, Stirlingshire, Scotland BP Grangemouth Stirlingshire Scotland FK3 9XH XH, Stirlingshire, Scotland Univ London Imperial Coll Sci Technol & Med, Dept Mech Engn, London SW7 2BX, England Univ London Imperial Coll Sci Technol & Med London England SW72BX gland
Titolo Testata:
PLASTICS RUBBER AND COMPOSITES
fascicolo: 9, volume: 29, anno: 2000,
pagine: 447 - 452
SICI:
1465-8011(2000)29:9<447:CZMOCG>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
FINITE-VOLUME METHOD; FRACTURE; SOLIDS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
15
Recensione:
Indirizzi per estratti:
Indirizzo: Pandya, KC BP, POB 21,Boness Rd, Grangemouth FK3 9XH, Stirlingshire, Scotland BP POB 21,Boness Rd Grangemouth Stirlingshire Scotland FK3 9XH
Citazione:
K.C. Pandya et al., "Cohesive zone modelling of crack growth in polymers - Part 2 - Numerical simulation of crack growth", PLAS RUB C, 29(9), 2000, pp. 447-452

Abstract

Cohesive zone models, which incorporate some form of cohesive law as the fracture criterion within the localised damage zone, are increasingly being used in the fracture assessment of tough engineering materials. However, the exact characterisation of the material within the damage zone is crucial as it has a fundamental bearing on the computed crack growth rates. A procedure is presented for implementing a cohesive zone model using the finite volume method by incorporating experimentally measured traction curves as the local fracture criterion. Experimental load-time and crack growth data intough polyethylene for a three point bend geometry are compared with numerical predictions. Reasonable agreement is achieved between experiment and model predictions when a single fixed rate traction-separation curve is usedfor all cells along the prescribed crack path. Predictions are improved byincorporating a scheme for switching between a family of rate dependent curves in place of a single fixed rate curve. Results also indicate the necessity of incorporating the effect of difference in constraint along the crack path into the choice of the local traction-separation law.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/09/20 alle ore 18:31:01