The rotomoulding industry is impeded by long manufacturing cycle times, due to insufficient time required for the materials to achieve a stable state on cooling. Thermal residual stresses are induced in rotomoulded parts due to uncontrolled heat transfer, producing shrinkage and warpage in parts. There is little information about quantifying shrinkage and warpage due to a lack of available experimental data. The main aim of this work is to develop simulation model for shrinkage and warpage occurrence in rotomoulded polymer parts. In this work, the Abaqus FE modelling tool is used for obtaining the thermal coefficients data required in shrinkage model. The simulation results obtained by cooling of the molten polymer fuel tank part has provided information about heat transfer coefficient data. It is expected that once model is developed taking into account the effect of crystallization in polymers on shrinkage, it will be used to simulate shrinkage and warpage in actual rotomoulded parts. However, in this work only preliminary results are discussed. This simulation work provides a scientific understanding needed to achieve desired optimum mould surface temperature for improved cycle time, whilst minimizing shrinkage and warpage occurrence.
|Number of pages||4|
|Publication status||Published - 26 Apr 2020|
|Event||23rd International Conference on Material Forming, ESAFORM 2020 - Cottbus, Germany|
Duration: 04 May 2020 → …
Bibliographical noteFunding Information:
The authors acknowledge and thankful to Special EU Programmes Body (SEUPB) for the financial support provided under EU INTERREG VA programme. Special thanks are also due to Dr Ed Wright of RotoSim ltd. for valuable discussions and suggestions.
© 2020 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of the scientific committee of the 23rd International Conference on Material Forming.
Copyright 2020 Elsevier B.V., All rights reserved.
- Rotational Moulding
- Rotomoulding Simulation
- Shrinkage and Warpage
ASJC Scopus subject areas
- Industrial and Manufacturing Engineering
- Artificial Intelligence