某型航空发动机拆装车力学性能校核  

Verification of the Mechanical Performance of an Aero-engine Disassembly and Assembly Vehicle

作　　者：程林 贾会星[1] 杨靖[1] CHENG Lin;JIA Huixing;YANG Jing(College of Mechanical and Automotive Engineering,Chuzhou Polytechnic,Chuzhou 239000,China)

机构地区：[1]滁州职业技术学院机械与汽车工程学院,安徽滁州239000

出　　处：《西安航空学院学报》2023年第5期22-26,共5页Journal of Xi’an Aeronautical Institute

基　　金：安徽省高校自科重点研究项目(2022AH052649)。

摘　　要：为了校核某型自主研发的航空发动机拆装车力学性能,建立拆装车有限元数学模型并导入HyperMesh软件中进行单元选择、网格处理、材料参数设置及单元属性赋予;然后,运用RADIOSS求解器对拆装车在非工作状态及工作状态下的极限位置处的最大载荷进行校核,分别获得极限位置的应力云图和位移云图。结果表明:非工作状态下,拆装车最大应力值为188.6 MPa,位于拆装车轴线滚转升降机构连接的支撑板处,最大位移量为13.94 mm,位于拆装车承载侧的端部和滑架的端部;工作状态下,载荷在右端时拆装车受力最大,为187 MPa,位于升降机构支撑板右侧,最大位移量为12.23 mm,位于拆装车滑架的端部和承载两侧的端部;经校核,发动机拆装车最大应力值及最大位移量均小于材料的许用值,满足发动机拆装车整体结构力学性能设计要求,且多数零部件的最大应力值远小于材料的许用应力值。研究结果对拆装车轻量化优化提供理论依据。In order to verify the mechanical performance of the disassembly and assembly vehicle for an independently developed aero-engine,a finite element mathematical model of the disassembly and assembly vehicle is established.This model is imported into the HyperMesh software for tasks including element selection,mesh processing,material parameter configuration,and assignment of element properties.Then,the RADIOSS solver is utilized to verify the maximum loads at the extreme positions of the disassembly and assembly vehicle under both non-operational and operational conditions.Stress contour maps and displacement contour maps are obtained for these extreme positions.The results indicate that under non-operational conditions,the maximum stress value for the disassembly and assembly vehicle is 188.6 MPa,and the maximum displacement is 13.94 mm,which is located at the end of the load-bearing side of the vehicle and the end of the slider.Under operational conditions,when the load is applied at the right end,the maximum stress experienced by the disassembly and assembly vehicle is 187 MPa.This stress is located at the right side of the support plate of the lifting mechanism,with the maximum displacement being 12.23 mm located at the end of the slide frame of the disassembly vehicle and the end of the bearing sides.After the verification,the maximum stress value and maximum displacement of the engine disassembly vehicle are below the allowable limits of the material,both the maximum stress value and the maximum displacement of the engine disassembly and assembly vehicle are below the allowable limits of the material.This confirms the satisfaction of the overall structural mechanical design requirements of the engine disassembly and assembly vehicle and the majority of the components exhibit maximum stress values that are considerably lower than the allowable stress limits of the material.The research findings provide a theoretical basis for the lightweight optimization of the disassembly and assembly vehicles.

关 键 词：发动机拆装车 有限元 力学性能 

分 类 号：V263[航空宇航科学与技术—航空宇航制造工程]