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Analysis of polymer crystallization and residual stresses in injection molded parts

Authors
  • Spina, Roberto1
  • Spekowius, Marcel2
  • Dahlmann, Rainer2
  • Hopmann, Christian2
  • 1 Politecnico di Bari, Dept. of Mechanics, Mathematics and Management (DMMM), Viale Japigia 182, Bari, 70126, Italy , Bari (Italy)
  • 2 RWTH Aachen, Institute of Plastics Processing (IKV), Pontstraße 55, Aachen, 52062, Germany , Aachen (Germany)
Type
Published Article
Journal
International Journal of Precision Engineering and Manufacturing
Publisher
Springer Berlin Heidelberg
Publication Date
Jan 09, 2014
Volume
15
Issue
1
Pages
89–96
Identifiers
DOI: 10.1007/s12541-013-0309-2
Source
Springer Nature
Keywords
License
Yellow

Abstract

The main objective of the presented work is to develop an integrated computational environment that predicts final part properties made of semicrystalline thermoplastics. This objective is fulfilled by adopting the following two-step approach: 1) identification of an analytical scheme to correlate crystallization parameters with engineer properties; 2) apply the analytical scheme to the numerical simulation to study the polymer and final properties of the part. In this work the crystallization evolution in cooling phase, mainly influenced by thermal gradients, and its effect on the final part properties are investigated. The numerical method, crystallization models and their implementation into numerical software are described as well as the experimental data.

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