• Rietman, B.
• Thije, René H. W. Ten
• Haanappel, S. P.
• Haanappel, Sebastiaan
• Rietman, Bert
• Sachs, Ulrich
• Akkerman, Remko
• Ten Thije, R. H. W.
• Sachs, U.

Abstract

Design and production guidelines for UD reinforced thermoplastic composites are highly desirable. Therefore, forming experiments and simulations with a realistic complex shaped product were conducted. Thermoforming experiments with quasi-isotropic UD carbon/PEEK and 8HS woven glass/PPS composites showed a clear difference in formability. Many wrinkles develop near doubly curved areas for the considered UD composites, whereas significant in-plane shear is observed for the woven composites. Forming prediction tools can be utilised to optimise the product design with respect to formability. A forming prediction methodology is shown, which encompasses finite element modelling in combination with material models that describe major deformation mechanisms. Characterisation methods were developed to describe inter-ply friction and in-plane shear. Forming simulations are able to indicate the critical areas for the UD composites, as is concluded from the comparison of wrinkling and in-plane shear distributions within the formed specimens. Forming experiments and predictions match qualitatively well and this tool can successfully be utilised in the product design phases

Topics

• impedance spectroscopy
• Carbon
• phase
• experiment
• simulation
• glass
• glass
• composite
• forming
• deformation mechanism
• isotropic
• thermoplastic
• woven