TC4钛合金法兰-复合材料轴冷缩装配仿真分析

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Simulation analysis of shrink-fit assembly for TC4 titanium alloy flange-composite shaft

CUI Tu'，GAO Guibin²，JI Chunming²*，WANG Bing² （1.AECC Harbin Dongan Engine Co.，Ltd.，Harbin 150066; 2.Harbin Institute of Technology，Center for Composite Materials and Structure，Harbin 150001）

Abstract：Toaddressthe issueof substandardaxial assemblyaccuracyof the assemblyofTC4titaniumalloyflanges and composite material tail shafts during theproductionproces，astaticsimulationmodelfortheshrink-fitassemblyof TC4titaniumalloyflangesandcomposite material tailshaftswas established.Bysimulating theentire processofcooling，pressftting，andthermal expansionoftheTC4titaniumalloyflange，thecontactstressanddeformationoftheTC4titaniumaly flangeundershrink-fitassemblywereanalyzed.Throughthestudyof theshrink-fitassmblysimulationmodeloftheTC4 titaniumaloyflange-compositematerialshaft，thepossiblecausesfortheaxialdisplacementoftheTC4titaniumalloy flange during the assmbly process were identifiedas：thermal expansionof the flange，residual deformationof the flange andtheshaft tube，geometricconfigurationof thflange，etc.Meanwhile，basedontheanalysisof thesimulationresults，the relationshipandvariationlawbetween theaxialassemblyerorandthepress-fitingdepth were examined，andatheoretical initial assembly clearance was derived to addressthe impact of shrink-fit assembly onaxial deformation.

Keywords：coldsrinkassembly;fiiteelement;interferenceassembly;axialdeformation;compositetailshaft;itamalloy flange; statics model

1引言

直升机尾轴作为连接主减速器与尾桨的关键部件，承担着传递动力、平衡反扭距及维持飞行稳定的重要功能。（剩余5408字）