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Modelling manufacturing deformations in corner sections made of composite materials

Wisnom, Michael R.; Çinar, Kenan; Çınar, Kenan; Öztürk, Umud Esat; Wisnom, Michael R; Ersoy, Nuri

Authors

Michael R. Wisnom

Kenan Çinar

Kenan Çınar

Umud Esat Öztürk

Michael R Wisnom

Nuri Ersoy Nuri3.Ersoy@uwe.ac.uk
Senior Lecturer in Mechanical Engineering



Abstract

A three-step finite element model has been implemented to predict the spring-in of L-shaped parts. The material property development during the cure has been modelled as step changes during transitions between viscous, rubbery and glassy states of the resin. The tool-part interaction is modelled as a sliding interface with a constant sliding shear stress. The effect of various material and geometric variables on the deformation of L-Section parts are investigated by a parameter sensitivity analysis. The spring-in predictions obtained by the finite element method are compared to experimental measurements for unidirectional and cross-ply parts of various thicknesses and radii. Results indicate that although a 2D plane strain model can predict the spring-in measured at the symmetry plane fairly well, it is not sufficient to capture the complex deformation patterns observed. © The Author(s) 2013 Reprints and permissions: sagepub.co.uk/journalsPermissions.nav.

Journal Article Type Article
Publication Date Mar 1, 2014
Journal Journal of Composite Materials
Print ISSN 0021-9983
Electronic ISSN 1530-793X
Publisher SAGE Publications
Peer Reviewed Peer Reviewed
Volume 48
Issue 7
Pages 799-813
APA6 Citation Çinar, K., Wisnom, M. R., Çınar, K., Öztürk, U. E., Ersoy, N., & Wisnom, M. R. (2014). Modelling manufacturing deformations in corner sections made of composite materials. Journal of Composite Materials, 48(7), 799-813. https://doi.org/10.1177/0021998313477896
DOI https://doi.org/10.1177/0021998313477896
Keywords polymer–matrix composites, residual/internal stress, finite element analysis, autoclave
Publisher URL http://dx.doi.org/10.1177/0021998313477896
Additional Information Additional Information : Copyright(c)2013 Reprinted by permission of SAGE publications.

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