Study on the influence of moulding process on the performance of composite curved structural parts

doi:10.19936/j.cnki.2096-8000.20241128.018

Abstract

Abstract: Through the research and development and test verification of two kinds of curved structural parts of drone rib and bulkhead, the influence of molding process on the performance of composite curved structural parts is studied. To meet the lightweight requirements of drones, the rib adopts a composite foam sandwich structure of the curved external surface. The web-type rib has weight reduction holes and connecting holes on it. According to the rib structure, the prefabricated body is processed on the composite foam sandwich panel. The ribs are made by three moulding processes of unsealed edge, edge sealing with carbon cloth and edge sealing with film adhesive on the exposed foam area at the edge of the prefabricated body. The ribs are tested under aerodynamic load and skin tension load respectively. In addition, the displacement numerical analysis is carried out by ABAQUS finite element analysis software platform, so as to conduct the deformation comparison of the wings under the two loads. It can be found from the results that the carbon cloth and the film adhesive can protect the foam core of the composite curved structure, and that the rib of the edge sealing with carbon cloth, that is, the integral cladding composite foam sandwich structure, has the highest strength and stiffness. Through the research and development of the bulkhead structure, the technical feasibility of the integral cladding composite foam sandwich structure is further verified.

Key words: composite material, curved surface structure, wing rib, bulkhead, forming process

CLC Number:

TB332

KONG Na, WANG Xijie, LI Yingzhi, GOU Kai, WANG Zengjia. Study on the influence of moulding process on the performance of composite curved structural parts[J]. COMPOSITES SCIENCE AND ENGINEERING, 2024, 0(11): 127-132.

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