Design of Polymer Extrusion Dies Using Finite Element Analysis PDF Download
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Author: G.N. Kouzilos
Publisher:
ISBN:
Category : Technology
Languages : en
Pages :
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Book Description
A computational fluid dynamics (CFD) model has been developed to compute the pressure, temperature, velocity, viscosity and viscous dissipation in the high-density polyethylene (HDPE) extrusion process. The numerical approach agrees fairly well with the experimental data recorded during the extrusion process of the material. The extrusion spider die was designed to produce high-density polyethylene pipes of 32 mm inner nominal diameter and 2.4 mm thickness. In order to investigate if the spider legs are able to perform under the pressure occurred using the maximum flow rate provided by the single screw extruder of this study, a stress analysis was conducted on a single spider leg. This fluid-structure interaction (FSI) problem was solved using the COMSOL Multiphysics software. Finally, the results obtained from the FE analysis were applied in the design and fabrication of the spider die, selecting IMPAX (tool steel) as fabrication material.
Author: G.N. Kouzilos
Publisher:
ISBN:
Category : Technology
Languages : en
Pages :
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Book Description
A computational fluid dynamics (CFD) model has been developed to compute the pressure, temperature, velocity, viscosity and viscous dissipation in the high-density polyethylene (HDPE) extrusion process. The numerical approach agrees fairly well with the experimental data recorded during the extrusion process of the material. The extrusion spider die was designed to produce high-density polyethylene pipes of 32 mm inner nominal diameter and 2.4 mm thickness. In order to investigate if the spider legs are able to perform under the pressure occurred using the maximum flow rate provided by the single screw extruder of this study, a stress analysis was conducted on a single spider leg. This fluid-structure interaction (FSI) problem was solved using the COMSOL Multiphysics software. Finally, the results obtained from the FE analysis were applied in the design and fabrication of the spider die, selecting IMPAX (tool steel) as fabrication material.
Author: James Allen Peitzmeier
Publisher:
ISBN:
Category :
Languages : en
Pages : 142
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Book Description
Author: Madiajagane Rathinavelu
Publisher:
ISBN:
Category : Extrusion process
Languages : en
Pages : 216
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Book Description
Author: Christian Hopmann
Publisher: Carl Hanser Verlag GmbH Co KG
ISBN: 1569906815
Category : Technology & Engineering
Languages : en
Pages : 479
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Book Description
This definitive book provides a comprehensive account of the full range of dies used for extrusion of plastics and elastomers. The distinctive features of the various types of dies are described in detail. Expert advice on the configuration of dies is given, and the possibilities of computer-aided design, as well as its limitations, are demonstrated. Fundamentals and computational procedures are clearly explained so that no special prior knowledge of the subject is required. The mechanical configuration, handling, and maintenance of extrusion dies are described. Calibration procedures for pipes and profiles are also discussed. This book was written for plastics engineers who need daily support in their practical work in industry and science, as well as for students preparing for their professional life. The 4th edition is brought up to date with several important additions, including coverage of multilayer (>15 layer) dies, melt encapsulation, and simulation tools (rheological/thermal CFD simulations).
Author: Ihsan Aladdin Abbud
Publisher:
ISBN:
Category : Extrusion
Languages : en
Pages : 182
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Book Description
Author: Prashant Gosavi
Publisher:
ISBN:
Category : Extrusion process
Languages : en
Pages : 170
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Book Description
Author: Sayyad Zahid Qamar
Publisher: BoD – Books on Demand
ISBN: 9535138375
Category : Technology & Engineering
Languages : en
Pages : 222
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Book Description
Extrusion is a very popular manufacturing process, especially because of its versatility in terms of materials and shapes. Representing the vast and multifaceted field of extrusion, this book contains write-ups on latest developments from experts in the field. Part (A) on Metal Extrusion contains chapters on spur gear manufacturing, stiff vacuum extrusion, and indirect extrusion for subsurface tubular expansion. Part (B) on Food and Polymer Extrusion includes chapters on extrusion cooking of functional foods, changes in nutritional properties in extrusion of cereals, physicochemical changes of starch in extrusion of corn flour, extruded aquaculture feed, optimal design of polymer extrusion dies, and extrusion cooking technology for food products.
Author: Walter Michaeli
Publisher:
ISBN:
Category : Dyes and dyeing
Languages : en
Pages : 472
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Book Description
Author: Yihan Huang
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: Sushil Kainth
Publisher: Carl Hanser Verlag GmbH Co KG
ISBN: 1569906734
Category : Technology & Engineering
Languages : en
Pages : 358
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Book Description
"Die Design for Extrusion of Plastic Tubes and Pipes" covers this topic from a uniquely practical perspective. The content draws on the author's over 50 years of experience in the plastics processing industry, most recently as head of the successful extrusion die manufacturing company he established in 1995. His approach is oriented toward solving production problems at the design stage using computer aided techniques for design and simulation of the plastic flow. The book provides a step-by-step guide to extrusion die design, with worked examples to illustrate problem solving. It is shown how important melt flow variables (e.g., pressure drop, shear stress, shear rate, temperature variations, and distribution variations, etc.) of key materials are determined using FEM software. The detailed drawings of complete dies for various applications that are provided constitute a rare and valuable resource. Both mono- and multilayer pipes are covered. Using the proven methods and examples from this book, the reader is well-equipped to understand dies for successful manufacture of tubes and pipes of many types. Contents: Basic Considerations Project Planning Design of a Simple Die Simulation of Melt Flow Spiral Die Monolayer Die for Tubes ∅1 mm to ∅6 mm Monolayer Die for Tubes ∅4 mm to ∅16 mm Monolayer Die for Pipes ∅50 mm to ∅125 mm Monolayer Die for Pipes ∅140 mm to ∅315 mm Coextrusion Pipe Dies Coextrusion Die (∅5 mm to ∅16 mm) Coextrusion Three-Layer Die (∅20 mm to ∅65 mm) Three-Layer-Plus-Striping Die for ∅25 mm to ∅110 mm Pipes Materials for Extrusion Dies
