Abstract: Design and verification of RTM(resin transfer moulding)process for a typical struture of composites fuselage Z-shaped frame parts. The injection scheme of the part is designed and simulated using PAM-RTM, the results show that the resin filling rate can reach 100%. Through the study of the relationship between injection pressure and filling time, it is found that with the increase of injection pressure, the filling time first decreases rapidly and then gradually slows down. Completed the design and manufacture of the RTM tooling, the upper and lower molds can cooperate with different chassis to complete the operation of different processes, and designed the manual hydraulic lifting mechanism to solve the problem of difficult demoulding of RTM process parts. Design of the RTM process flow and complete manufacturing verification, the results show that the part has no significant internal and external defects, thickness deviation within 4%, the volume content of fiber reaches more than 55% and the contour of the part basically meets the requirements. The effectiveness of the Z-shaped frame RTM forming process scheme is verified.

Key words: composite materials, resin transfer moulding (RTM), Z-shaped frame, schematic design, flow simulation