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Understanding Invert Forming of Thin-Walled Polyvinyl Chloride Tubes Using a Die Based on a Mechanical Flow Formulation

Alves, L. M. ; Martins, P. A. F.

Materials and manufacturing processes, 2009-12, Vol.24 (12), p.1398-1404 [Periódico revisado por pares]

Taylor & Francis Group

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  • Título:
    Understanding Invert Forming of Thin-Walled Polyvinyl Chloride Tubes Using a Die Based on a Mechanical Flow Formulation
  • Autor: Alves, L. M. ; Martins, P. A. F.
  • Assuntos: Cold pressing ; Deformation ; Experimentation ; Finite element modeling ; Inversions ; Invert forming ; Mathematical models ; Plastic deformation ; Polyvinyl chlorides ; PVC tubes ; Thin walled ; Tubes
  • É parte de: Materials and manufacturing processes, 2009-12, Vol.24 (12), p.1398-1404
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
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  • Descrição: 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.
  • Editor: Taylor & Francis Group
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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