The implications of fiber compaction and saturation on fully coupled VARTM simulation

摘要: Vacuum Assisted Resin Transfer Molding (VARTM) is a process by which resin drawn through fiber preforms in one-sided mold using an induced pressure gradient. Although the approach to model flow VARTM similar (RTM) process, modeling can be significantly more complex if one accounts for compaction and dual scale nature of preform present RTM but often neglected. This article investigates influence tow saturation during filling process. A non-rigid control volume used formulate set governing equations describe flow. Tow impregnation at micro-scale coupled with global macroscale applying conservation mass principles. Preform modeled as non-linear spring bed where dynamically distributed between preform. The variation permeability modified due changes fraction result changing compaction. simple one-dimensional case solved investigate role porous media processes. parametric study allows us identify situations neglect conditions under fully should applied satisfactory results.