复合材料构件成型模具型板改进设计

Improved Design of Composite Component forming mold template

复合材料构件热压罐成型过程中,成型模具型板表面与构件直接接触进行热传导,因此型板表面温度均匀性对复合材料构件成型精度起着至关重要的作用。利用FLUENT对框架式成型模具固化成型过程中的温度场进行模拟,找出领先点和滞后点,对型板表面温度分布进行分析。为改善型板表面温度均匀性,结合热阻原理和射流冲击效应,设计一种变厚度的梯形型板、阶梯形型板和连续变厚度型板。仿真结果表明,合理地改变型板厚度对改善型板温度均匀性具有一定的效果。

During the forming process of the composite member autoclave,the surface of the forming mold plate is in direct contact with the member for heat conduction,so the uniformity of the surface temperature of the molding plate plays an important role in the molding precision of the composite member.FLUENT is used to simulate the temperature field during the solidification molding process of the frame molding die.The leading point lag point are found out and the surface temperature distribution of the profile plate is analyzed.To improve the surface temperature uniformity of the stencil,combined with the thermal resistance principle and the jet Impact effect,the slab whose thickness can change is designed,including a trapezoidal slab,a stepped slab and a continuously variable slab.The simulation results show that a reasonable change of the slab thickness has a certain effect on improving the temperature uniformity of the stencil.