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Titolo:
APPLICATION OF AN ELASTIC MODEL TO THE LARGE-DEFORMATION, HIGH-TEMPERATURE STRETCHING OF POLYPROPYLENE
Autore:
SWEENEY J; COLLINS TLD; COATES PD; WARD IM;
Indirizzi:
UNIV LEEDS,IRC POLYMER SCI & TECHNOL LEEDS LS2 9JT W YORKSHIRE ENGLAND UNIV LEEDS,IRC POLYMER SCI & TECHNOL LEEDS LS2 9JT W YORKSHIRE ENGLAND UNIV BRADFORD,DEPT MECH & MFG ENGN,IRC POLYMER SCI & TECHNOL BRADFORDBD7 1DP W YORKSHIRE ENGLAND
Titolo Testata:
Polymer
fascicolo: 24, volume: 38, anno: 1997,
pagine: 5991 - 5999
SICI:
0032-3861(1997)38:24<5991:AOAEMT>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
DOUBLE YIELD POINTS; NECK PROPAGATION; GLASSY-POLYMERS; POLYETHYLENE;
Keywords:
MULTIAXIAL DRAWING; POLYMER NETWORK; FINITE ELEMENTS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
9
Recensione:
Indirizzi per estratti:
Citazione:
J. Sweeney et al., "APPLICATION OF AN ELASTIC MODEL TO THE LARGE-DEFORMATION, HIGH-TEMPERATURE STRETCHING OF POLYPROPYLENE", Polymer, 38(24), 1997, pp. 5991-5999

Abstract

A physically based constitutive law for the deformation of polymers is applied to the stretching of polypropylene to large deformations at elevated temperatures. In this deformation regime, which is applicableto many forming processes, necking of the material is a persistent feature. The theory is elastic in nature, but includes the necking phenomenon as an inherent property. It is incorporated into a commercial finite element code and used to model a number of different experimentalmodes of deformation, both uniaxial and biaxial. Comparison is made with the experiments and it is found that both strains and forces are represented realistically, even though the true nature of the material is viscoelastic. Some of the discrepancies in the model predictions are traceable to its elastic nature. (C) 1997 Elsevier Science Ltd.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 27/11/20 alle ore 13:53:00