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Computational analysis of the interaction between impregnation, forming and curing in pultrusion
Full text linkNumerical and analytical models dealing with different physics involved in pultrusion are combined in the optic of an integrated analysis of the process. The impregnation stage is simulated by means of a CFD multiphase model, evaluating the pressure and velocity field in the liquid resin. Composite temperature and degree of cure are inferred using 3D thermo-chemical models. Finally, contact conditions, stresses and strains are derived applying computational simulation and analytical models, in order to predict the final pulling force. Different product sizes are considered, simulating suitable processing condition
Laminate mechanics for balanced woven fabrics
Full text linkLaminate mechanics equations are presented for composites with balanced woven fabric reinforcements. It is shown that mimicking these textile composites with equivalent transversely isotropic (‘unidirectional’) layers requires disputable manipulations. Various micromechanics predictions of textile composite properties are currently available, however. These can be applied directly to generate the required material property data for the woven fabric laminate mechanics. The commonly used quasi-isotropic laminates with balanced woven fabric reinforcement are subsequently analysed. Closed form expressions are derived for the inplane and out-of-plane elastic properties of these quasi-isotropic laminates, which slightly differ from previous results for unidirectional reinforcement
Deliverable D5.3-01: Description of predicitons of the draping and filling models (2nd phase)
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