大曲率蜂窝夹层复合材料件变形控制研究

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Research on deformation control of large-curvature honeycomb sandwich composite parts

MA Jichuan*，SHENG Zhanqi，LIU Jiahui （Harbin Aircraft Industry Group Co.，Ltd.，Harbin 150066）

Abstract：During thecuring processofcomposite parts，due to factors such as the mismatch of the linear expansioncoefficientsoffibers，resinandmoldsandtheuneventemperaturefieldcausedbycuringheatrelease，residualstressisgenerated，which leads to springback deformation of partsaftercuring.The large-curvature honeycomb sandwich structure is widelyused inpositionssuchasaircraft skin andfairings.Due to its structural shape，this typeofstructureusuallhaslarge springback deformationdue toresidual tress duringcuring，resultinginproblemssuchas diffcultsubsequentassembly，assembly dimension diffrences，and gapdiferences.This paper conducts shape scanning ofsuch parts，combines withassemblyrelationshipcomparisontoanalyzedeformationdata，anddesignsand manufactures theformingmold withprofilecompensation.It greatly reduces thecuring deformationof honeycomb sandwich structure parts and improves the assemblyquality of parts.

Keywords：composite parts;springbackdeformation;forming mold; profile compensation; assemblyquality

1引言

复合材料件具有高比强度、比刚度，同时具备良好的耐腐蚀性与耐疲劳能力，目前复合材料被广泛应用于航空航天领域[1-2]。（剩余5060字）