Abstract
An analysis based on the finite element technique was developed to simulate the curing process of axisymmetric composites. The analysis relates the cure temperature, applied at the boundaries of the composite case, to the thermal, chemical and physical processes occurring in the composite during cure. Included in the analysis are the effects of material anisotropy due to fibre orientation and heat generation due to exothermic chemical reactions. For a specified cure cycle, the model can be used to calculate the temperature distribution, the degree of cure of the resin and the resin viscosity inside the composite case. A computer code based on the finite element code was developed to obtain numerical solutions of the thermochemical cure model. Cure simulations of a 146 mm (5.75 in) diameter graphite/epoxy test bottle were performed using the model. Results of the simulations were compared with temperature data measured during cure. Agreement between the results of the model and data was excellent.
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