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Applied Composite Materials
Published in: Applied Composite Materials 1/2017

15-08-2016

Material Models Used to Predict Spring-in of Composite Elements: a Comparative Study

Author: Anna Galińska

Published in: Applied Composite Materials | Issue 1/2017

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Abstract

There have been several approaches used in the modelling of the process-induced deformations of composite parts developed so far. The most universal and most frequently used approach is the FEM modelling. In the scope of the FEM modelling several material models have been used to model the composite behaviour. In the present work two of the most popular material models: elastic and CHILE (cure hardening instantaneous linear elastic) are used to model the spring-in deformations of composite specimens and a structure fragment. The elastic model is more effective, whereas the CHILE model is considered more accurate. The results of the models are compared with each other and with the measured deformations of the real composite parts. Such a comparison shows that both models allow to predict the deformations reasonably well and that there is little difference between their results. This leads to a conclusion that the use of the simpler elastic model is a valid engineering practice.
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Metadata
Title
Material Models Used to Predict Spring-in of Composite Elements: a Comparative Study
Author
Anna Galińska
Publication date
15-08-2016
Publisher
Springer Netherlands
Published in
Applied Composite Materials / Issue 1/2017
Print ISSN: 0929-189X
Electronic ISSN: 1573-4897
DOI
https://doi.org/10.1007/s10443-016-9519-y

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