钛合金压气机强度及其内流场分析与试验研究  

Strength and internal flow field analysis of titanium alloy compressor

作　　者：王春辉 刘克铭 沈达 张莫 赵庆鹏 王宝来 WANG Chunhui;LIU Keming;SHEN Da;ZHANG Mo;ZHAO Qingpeng;WANG Baolai(Office of Academic Affairs,Liaoning Technical University,Fuxin 123000,China;College of Mechanical Engineering,Liaoning Technical University,Fuxin 123000,China;Fuxin Third Vocational and Technical College,Fuxin 123000,China)

机构地区：[1]辽宁工程技术大学教务处,辽宁阜新123000 [2]辽宁工程技术大学机械工程学院,辽宁阜新123000 [3]阜新市第三职业技术专业学校,辽宁阜新123000

出　　处：《兵器材料科学与工程》2021年第3期14-21,共8页Ordnance Material Science and Engineering

基　　金：国家自然科学基金(51405213)。

摘　　要：为探究高强钛合金叶片在高速旋转下的强度及压气机内部的气体流动状态,用ANSYS workbench有限元仿真分析模块仿真与试验相结合的方法,对高强钛合金叶片在不同转速工况下进行强度仿真分析;对压气机转动区进行流道提取,探究在60 078 r/min下的内部压力场、温度场及速度场的分布情况;用matlab数值优化方法对叶轮结构进行优化。结果表明:高强钛合金满足在恶劣条件下的工作要求,且叶轮流动区域在高速旋转时,叶轮边缘的静压最大,气体流动速度最大;在既考虑离心力又考虑气动力的综合作用力下对高强钛合金叶轮的影响较大,变形量达0.32 mm,高强钛合金叶轮的最大等效应力为712 MPa;用matlab优化后的结构流力损失减小明显,比优化前下降32.8%。In order to explore the strength of high-strength titanium alloy blade in high-speed rotation and the change of gas flow state in compressor,the strength of high-strength titanium alloy blade under different rotational speeds was studied by using ANSYS workbench finite element simulation analysis module simulation and test method. The distribution of internal pressure field,temperature field and velocity field at a rotation speed of 60 078 r/min was investigated by extracting the flow channel of the rotating area of the compressor,and the impeller structure was optimized by matlab numerical simulation method. The results show that the high strength titanium alloy can meet the working requirements under harsh conditions and the flow region of the impeller has the highest static pressure and the maximum gas flow velocity at the edge of the high-speed rotation impeller. Both centrifugal force and aerodynamic force have strong influence on impeller. The deformation is 0.32 mm,and the maximum equivalent stress of high strength titanium alloy impeller is 712 MPa. Compared with matlab optimized structure,the loss of flow force decreases obviously,which is 32.8% lower than that before optimization.

关 键 词：高强度钛合金 强度分析 内流场 优化 

分 类 号：TH452[机械工程—机械制造及自动化]