基于复合材料平板模型树脂传递模塑成型（RTM）工艺的充模过程，以某异形中空结构复合材料构件的RTM成型工艺为研究对象，利用ABAQUS有限元仿真软件的多孔介质渗流模块对RTM充模过程中的注浇口选择方案、注射压力以及树脂在模具中的流动过程进行模拟，从而对该模型的RTM充模过程的工艺参数进行优化。结果表明：注射压力为0.3 MPa时，采用三注浇口、两注浇口和单注浇口同时注射所用最短时间分别为1 120、1 640、2 820 s。随着注射压力增大，充模所需时间随之缩短，最终出现临界压力值，约为0.6 MPa。注射压力对充模时间的影响在超过注射临界压力值后就不再明显。因此，该异形结构复合材料的RTM树脂充模过程的最佳工艺为三注浇口同时注射，注射压力0.6 MPa。

Based on the resin transfer molding (RTM) process of composite plate model, the paper takes the RTM process of a special hollow structure composite component as the research object, and uses the porous media seepage module of ABAQUS finite element simulation software to simulate the choice of pouring gate, injection pressure and the flow process of resin in the RTM mold filling process. Therefore, the process parameters of RTM filling process of this model are optimized. The results show that when the injection pressure of 0.3 MPa is used, the shortest injection time of three pours, two pours and single pours is 1 120, 1 640, 2 820 s, respectively. With the increase of injection pressure, the time required to fill the mold is shortened, and finally the critical pressure value is about 0.6 MPa. The influence of injection pressure on the filling time is no longer obvious when the critical injection pressure is exceeded. Therefore, the optimum process of RTM resin filling process of the special-shaped structural composites is simultaneous injection through three injection holes, and the injection pressure is 0.6 MPa.