树脂传递成型过程中温度场的数值研究

Numerical Research of Temperature Field During Resin Transfer Molding

温度场是树脂基复合材料传递成型过程中最为重要的影响因素.通过对成型过程中温度场的数值研究,揭示温度场不仅仅影响了树脂浸润多孔介质的过程,而且本身也受到多孔介质的孔隙率、树脂反应热、树脂注入温度和树脂注入流量等因素的影响,并最终决定了制品的成型过程和制品质量.

The temperature field is the most important concern during resin transfer molding of resinbased composite materials.The temperature field deciding the molding process and product quality was investigated through numerical simulation.Some factors influencing the temperature field,such as porosity of the porous media,resin reaction heat,resin injection temperature and resin injection flux,were discussed.In the simulation the 3D 1st-order upwind scheme was applied for spatial discretization,and the implicit scheme was used for time integration.Comparison between the present results and those previous ones proves the correctness and effectiveness of the proposed numerical method.It is also shown that,the resin injection temperature influences the temperature field much more markedly than the other factors,and the factors＇ effects on the part near the resin inlet are much weaker than those on the parts far away from the inlet,which means more temperature measure points shall be arranged in the zones far away from the inlet to better detect the real temperature field.