Artigo De: orcid, cienciavitae
Understanding invert forming of thin-walled polyvinyl chloride tubes using a die based on a mechanical flow formulation
Materials and Manufacturing Processes
— 2009
Informações chave
Autores:
Publicado em
Dezembro 2009
Resumo
The design of sound metallic double-walled tubular parts by internal and external inversion using a die is presently well established. Major operating parameters are identified and the typical modes of deformation that can occur during the process are fully characterized. In contrast to metals, there are no practical design rules and no published research work in the specialized literature concerning the manufacture of double-walled polymer tubes by inversion. This article is concerned with the abovementioned lack of knowledge and is a contribution towards the application of existing metallic tube inversion technologies to polymers. The experimental research work makes use of Polyvinyl Chloride (PVC) and the overall findings are interpreted in the light of an innovative extension of the flow formulation that is capable of modeling cold plastic deformation of pressure-sensitive materials under a non-associated flow rule. Emphasis is placed on the deformation mechanics of tube inversion applied to PVC and on the influence of the major operating parameters on the overall formability limits of the process. Results show that invert-forming of thin-walled PVC tubes using a die can be successfully utilized for producing custom and specific shapes at the tube ends.
Detalhes da publicação
Autores da comunidade :
Luís Manuel Mendonça Alves
ist13976
Paulo António Firme Martins
ist12470
Versão da publicação
AO - Versão original do autor
Título do contentor da publicação
Materials and Manufacturing Processes
Primeira página ou número de artigo
1398
Última página
1404
Volume
24
Fascículo
12
Domínio Científico (FOS)
mechanical-engineering - Engenharia Mecânica
Idioma da publicação (código ISO)
eng - Inglês
Identificador alternativo (URI)
http://www.scopus.com/inward/record.url?eid=2-s2.0-77949546023&partnerID=MN8TOARS
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