Finite‐Element Simulation of Polymer Flow and Extrudate Swell Through Hollow Profile Extrusion Die with the Multimode Differential Viscoelastic Model. Issue 1 (24th October 2011)
- Record Type:
- Journal Article
- Title:
- Finite‐Element Simulation of Polymer Flow and Extrudate Swell Through Hollow Profile Extrusion Die with the Multimode Differential Viscoelastic Model. Issue 1 (24th October 2011)
- Main Title:
- Finite‐Element Simulation of Polymer Flow and Extrudate Swell Through Hollow Profile Extrusion Die with the Multimode Differential Viscoelastic Model
- Authors:
- Mu, Yue
Zhao, Guoqun
Wu, Xianghong
Zhai, Jiqiang - Abstract:
- <abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>Extrudate swell is a common phenomenon in polymer processing that can significantly influence the quality of final products. In this study, the viscoelastic flow patterns and the swell phenomenon of low‐density polyethylene (LDPE) flowing through a hollow profile extrusion die are investigated by means of the finite element simulation. The mathematical model of three‐dimensional viscoelastic flow and extrudate swell of the polymer melt obeying a multimode differential Phan‐Thien and Tanner (mPTT) constitutive model is established. The rheological parameters of LDPE are obtained by fitting the material functions detected on a strain‐controlled rheometer. A penalty method is introduced to solve the viscoelastic flow and extrudate swell problem with a decoupled algorithm. The computational stability is improved by using the discrete elastic–viscous split stress (DEVSS) algorithm incorporating the inconsistent streamline‐upwind scheme. A streamface–streamline method is introduced to adjust the outlet free surface of the swelling extrudate. The design strategy of the hollow profile extrusion die is discussed. The essential flow characteristics and the mechanism of the swell phenomenon of polymer melt flowing through the hollow profile extrusion die are further investigated based on the proposed mathematical model and numerical scheme. © 2011 Wiley Periodicals, Inc. Adv Polym Techn 32: E1–E19, 2013; View this<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>Extrudate swell is a common phenomenon in polymer processing that can significantly influence the quality of final products. In this study, the viscoelastic flow patterns and the swell phenomenon of low‐density polyethylene (LDPE) flowing through a hollow profile extrusion die are investigated by means of the finite element simulation. The mathematical model of three‐dimensional viscoelastic flow and extrudate swell of the polymer melt obeying a multimode differential Phan‐Thien and Tanner (mPTT) constitutive model is established. The rheological parameters of LDPE are obtained by fitting the material functions detected on a strain‐controlled rheometer. A penalty method is introduced to solve the viscoelastic flow and extrudate swell problem with a decoupled algorithm. The computational stability is improved by using the discrete elastic–viscous split stress (DEVSS) algorithm incorporating the inconsistent streamline‐upwind scheme. A streamface–streamline method is introduced to adjust the outlet free surface of the swelling extrudate. The design strategy of the hollow profile extrusion die is discussed. The essential flow characteristics and the mechanism of the swell phenomenon of polymer melt flowing through the hollow profile extrusion die are further investigated based on the proposed mathematical model and numerical scheme. © 2011 Wiley Periodicals, Inc. Adv Polym Techn 32: E1–E19, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/adv.20265</p> </abstract> … (more)
- Is Part Of:
- Advances in polymer technology. Volume 32:Issue 1(2013:Spring)
- Journal:
- Advances in polymer technology
- Issue:
- Volume 32:Issue 1(2013:Spring)
- Issue Display:
- Volume 32, Issue 1 (2013)
- Year:
- 2013
- Volume:
- 32
- Issue:
- 1
- Issue Sort Value:
- 2013-0032-0001-0000
- Page Start:
- E1
- Page End:
- E19
- Publication Date:
- 2011-10-24
- Subjects:
- Plastics -- Periodicals
Polymers -- Periodicals
668.9 - Journal URLs:
- https://www.hindawi.com/journals/apt/contents/ ↗
- DOI:
- 10.1002/adv.20265 ↗
- Languages:
- English
- ISSNs:
- 0730-6679
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library DSC - 0710.610000
British Library STI - ELD Digital store - Ingest File:
- 3310.xml