Multi2physics f ield numerical model for hot2pressing process of composite

A multi2physics cure2thermal2st ress2flow field coupling numerical model was developed by the volume
averaging method for the hot2pressing processing , assuming that the prepregs are deformable porous medium. The fiber deformation , change of the volume f raction and permeability varied with the volume f raction of fiber were fully considered. A one 2 dimension curing model was developed and numerically solved by FEM for the composite laminate. AL E moving mesh method was used to t reat the moving boundary. The result shows that the model proposed here has bet ter agreement with experimental data than the classical models ; the composite laminate was compressed pile by pile. This phenomenon tallies with experiment . The quantity of resin discharged and the variety of volume f raction of fiber in different piles were revealed by this model .