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Multi-scale computer simulations of multi-tubular components manufactured by water-assisted injection moulding

2019Comunicação em conferência Acesso restrito
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dc.contributor.authorPascoal-Faria, Paula
dc.contributor.authorAlves, Nuno
dc.contributor.authorKamma-Lorger, Christina S.
dc.contributor.authorMarques, Rita
dc.contributor.authorGomes, Marta
dc.contributor.authorVenkat, Anurag
dc.contributor.authorSilva, Rui
dc.contributor.authorBastos, Lourenço
dc.contributor.authorCarneiro, Filipa
dc.contributor.authorCunha, Jorge
dc.contributor.authorMateus, Artur
dc.contributor.authorMitchell, Geoffrey R.
dc.date.accessioned2026-03-10T17:36:36Z
dc.date.available2026-03-10T17:36:36Z
dc.date.issued2019
dc.description.abstractWater assisted injection moulding is a recent development in the manufacturing technology associated with injection moulding. Injection moulding involved the high pressure injection of molten plastic in to a preformed metal mould which defines the exterior of the shape of the object. Water assisted injection moulding is a variant with an addition step in which water is injected into the mould after its has been filled with molten plastic. The water jet sweeps out the molten plastic in its path to leave a hollow tube in which the interior of the part is defined by the water jet. This technology is used for preparing tubular components for use in the automotive industry and for domestic appliances. We have been developing the technology to prepare parts with branches in the tubing. We have used fine-element simulations to explore the relationship between the process parameters and the subsequent final part. Of course such simulations only serve to define the exterior and interior of the tubular part. It is clear from the outline of the technology above that the molten plastic is subjected to a complex pressure and temperature variation with time which vary across the part and its location within the mould. The specification of the part is in most cases is limited to the geometry and the materials which is used in its preparation, in this case polyamide6 with 30% glass fibre. From the development of plastic processes over the last 50 years we have learnt that the properties of plastic part depend critically on the processing pathway and in particular the timescale for the transformation from molten material to the semi-crystalline solid state. We know from the use of small-angle and wide-angle scattering mapping of the structure and morphology of the multi-tubular components that the level of crystallinity and the extent of preferred orientation varies throughout the part and this may lead to warpage and other geometrical changes in the part during its service life. We have set out to explore how we can use the temperature and pressure variation from the finite element modelling to predict the structure and morphology at different regions in the part in order to be able to establish the parameters which yield a geometrically correct part which is also homogenous in its structure and morphology and hence properties. This paper describes the approach we have taken to make progress with this complex matter of simulations on multiple scales and the application of this technique to realistic automotive tubular components.eng
dc.identifier.citationPaula Pascoal-Faria, Nuno Alves, Christina S. Kamma-Lorger, Rita Marques, Marta Gomes, Anurag Venkat, Rui Silva, Lourenço Bastos, Filipa Carneiro, Jorge Cunha, Artur Mateus, Geoffrey R. Mitchell; Multi-scale computer simulations of multi-tubular components manufactured by water-assisted injection moulding. AIP Conf. Proc. 24 July 2019; 2116 (1): 230002. https://doi.org/10.1063/1.5114228
dc.identifier.doi10.1063/1.5114228
dc.identifier.issn0094-243X
dc.identifier.urihttp://hdl.handle.net/10400.8/15826
dc.language.isoeng
dc.peerreviewedyes
dc.publisherAIP Publishing
dc.relationCentre for Rapid and Sustainable Product Development
dc.relation.hasversionhttps://pubs.aip.org/aip/acp/article-abstract/2116/1/230002/763403/Multi-scale-computer-simulations-of-multi-tubular
dc.relation.ispartofAIP Conference Proceedings
dc.relation.ispartofCENTRAL EUROPEAN SYMPOSIUM ON THERMOPHYSICS 2019 (CEST)
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.titleMulti-scale computer simulations of multi-tubular components manufactured by water-assisted injection mouldingeng
dc.typeconference paper
dspace.entity.typePublication
oaire.awardNumberUID/Multi/04044/2019
oaire.awardTitleCentre for Rapid and Sustainable Product Development
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FMulti%2F04044%2F2019/PT
oaire.citation.conferencePlaceRhodes, Greece
oaire.citation.volume2133
oaire.fundingStream6817 - DCRRNI ID
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNamePascoal-Faria
person.familyNameAlves
person.familyNameMateus
person.familyNameMitchell
person.givenNamePaula
person.givenNameNuno
person.givenNameArtur
person.givenNameGeoffrey
person.identifier452149
person.identifier166356
person.identifier.ciencia-idE01D-874A-4145
person.identifier.ciencia-id311E-1559-8F6C
person.identifier.ciencia-id0E1A-9A57-E79A
person.identifier.ciencia-idE41A-ABDD-1FC7
person.identifier.orcid0000-0003-1474-9496
person.identifier.orcid0000-0002-5016-0868
person.identifier.orcid0000-0003-2483-9153
person.identifier.orcid0000-0001-7977-7610
person.identifier.ridN-4073-2013
person.identifier.ridH-3387-2018
person.identifier.scopus-author-id7006403383
person.identifier.scopus-author-id14028690000
person.identifier.scopus-author-id7403103397
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
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