Print Email Facebook Twitter A large displacement orthotropic viscoelastic model for manufacturing-induced distortions in Fibre Metal Laminates Title A large displacement orthotropic viscoelastic model for manufacturing-induced distortions in Fibre Metal Laminates Author Abouhamzeh, M. (TU Delft Structural Integrity & Composites) Sinke, J. (TU Delft Structural Integrity & Composites) Benedictus, R. (TU Delft Aerospace Structures & Materials; TU Delft Structural Integrity & Composites) Department Aerospace Structures & Materials Date 2019 Abstract Distortions and residual stresses are predicted in Fibre Metal Laminates (FMLs) under large deformations. A new modelling procedure is presented for small and large deformation analysis of thermo-viscoelastic problems of orthotropic materials. The material model is implemented in a finite element package which can be used for cure and/or temperature dependent response of composites undergoing large rotations but with small strains.Temperature-dependent and viscoelastic responses are characterised for GLARE, as the mostly used type of FMLs. The geometrically nonlinear thermo-viscoelastic model is used to predict the manufacturing-induced warpage of panels. The curing stresses are calculated from a previously developed model accounting for chemical shrinkage and stiffness evolution of the prepreg layers during cure. The shape deviation of some non-symmetric GLARE panels are predicted and compared to the real measurement of fabricated laminates. The accuracy of the model is verified which can be used in further studies to improve the precision of manufacturing and assembly and also to have better prediction of the fatigue life and residual strength. Subject CuringGLAREGlass-epoxy prepregLarge-deformationThermo-viscoelastic To reference this document use: http://resolver.tudelft.nl/uuid:90a48075-df46-4829-aeb5-4b47b39464bf DOI https://doi.org/10.1016/j.compstruct.2017.06.009 Embargo date 2020-01-01 ISSN 0263-8223 Source Composite Structures, 209, 1035-1041 Part of collection Institutional Repository Document type journal article Rights © 2019 M. Abouhamzeh, J. Sinke, R. Benedictus Files PDF Paper_ThVisco_GLARE_LD_proof.pdf 760.91 KB Close viewer /islandora/object/uuid:90a48075-df46-4829-aeb5-4b47b39464bf/datastream/OBJ/view