Experimental Measurements of sink terms for unsaturated flow during liquid composite molding

摘要

Simulation of the resin flow process is an important method used to investigate the unsaturated flow of liquid composite molding (LCM), and establishment of the sink function is the primary premise of unsaturated flow filling simulation during LCM. In this study, an experimental facility for unsaturated flow under one-dimensional constant pressure was established and an experimental method to establish the sink function was proposed. A specific expression of the sink function was obtained. This sink function was used to simulate the unsaturated mold filling experiment. Variations of flow front position, unsaturated length, mold filling time, and injection flow were compared. The established sink function and the simulation results were consistent with the experimental data.