复合材料“盒型”风道硅胶辅助加压成型工艺研究

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Research on silicone rubber-assisted pressure molding process for composite box-type air duct

WANG Fulin*，MA Jichuan，SONG Yan，YIN Rongying（Harbin Aircraft Industry Group Co.，Ltd.，Harbin ）

Abstract：Foracertain typeofaircraft，the frontductofthe lubrication system isacomposite box-typestructure.During theforming process，acombinationmoldtoolconsistingof metal mandrelsand siliconerubbercore molds was utilized.After curing，excessive expansionofthe silicone rubbercore molds caused significant gaps inthe assemblyseams betweenthe upper cover plate and metal side molds.This resulted intheextrusionof prepreg materials through thegaps betweentheupper coverplateand metal side molds，therebyafecting thequalityoftheformedpart.UsingABAQUSsoftware，simulations were conducted on the expansion behaviorofthesilicone rubber core molds and the pressures inducedduring the forming process.Theresults showed thatbyreducing the silicone thicknessfrom 12.3 mmto11 mm，the surface contact pressure decreased from 0.6～1.8 MPa to 0.25～0.7 MPa，eliminating defects caused by excessive expansion of the silicone rubber core molds and improving the overall quality of the part.

Keywords： composite materials; air duct; simulation analysis; molding process

1引言

复合材料由树脂基体和增强材料组成，树脂基体是复合材料的重要组成部分，起到传递载荷和均衡载荷的作用。（剩余5203字）