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本文应用流动模拟软件对制件制造结果产生的缺陷进行逆向分析,找出了缺陷出现的原因及解决办法。通过RTM工艺的数值模拟,快速有效地确定了波纹梁的注射形式和进出胶口位置,优化了注射压力、树脂粘度、渗透率等工艺参数,因而,得到复杂形状波纹梁的最优注胶方式。用数值模拟的逆向分析方法,对螺旋桨叶制备过程中出现的内部缺陷进行模拟和诊断,找到了缺陷产生的原因及解决办法,给出了制备工艺的修改方案,成功地排出了制作缺陷,通过实际制备验证,模拟结果与实际制备过程吻合较好。两个不同结构典型实例,说明计算机RTM工艺模拟对于模具开发、构件制造具有良好的指导意义。
In this paper, we use flow simulation software to reverse analyze the defect caused by the manufacture result, and find out the reason and solution to the defect. Through RTM process simulation, the injection form of corrugated beam and the position of inlet and outlet are determined quickly and effectively, and the process parameters such as injection pressure, resin viscosity and permeability are optimized. Therefore, the optimal injection method of corrugated beam with complex shape is obtained . The reverse analysis method of numerical simulation was used to simulate and diagnose the internal defects appearing during the preparation of propeller blades. The causes and solutions of the defects were found out. The modification scheme of the preparation process was given and the defects of fabrication were successfully eliminated. The actual preparation verification, the simulation results and the actual preparation process is in good agreement. The two typical examples of different structures show that the computer simulation of RTM process has a good guiding significance for mold development and component manufacturing.