航空发动机转子系统结构效率评估参数及计算方法
Assessment parameters and calculation methods of structural efficiency on rotor system in aero engine
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摘要: 根据航空发动机转子系统的结构特征和力学特征,提出了从结构的承载能力、抗变形能力和动力学环境适应能力3个方面进行结构效率评估的参数体系及其计算方法,并以典型小涵道比涡扇发动机转子系统为例进行了结构效率评估参数的计算分析.研究表明:平均应力系数、等效比刚度、极限惯性载荷作用下最大变形量、无量纲M-H因子和弯曲应变能系数等作为评估航空发动机转子系统结构效率的评估参数能够有效地反映各种载荷作用下结构形式和材料性能对应力水平、变形分布以及动力敏感度的影响.同时指出了该发动机转子系统现有结构设计的特点,以及进行结构优化的方向.Abstract: Based on the structural features and mechanical characteristics of aero engine rotor system,a calculation method and assessment parameters of structural efficiency were proposed.The method includes the bearing capacity,resistance to deformation and dynamic environment adaptability.A structural efficiency assessment on the rotor system of a typical turbofan engine was conducted.The study shows the assessment parameters include the average stress coefficient,the ratio of equivalent stiffness,maximum deformation at ultimate inertia loads,dimensionless M-H factor and the bending strain energy coefficient.Which can reflect the effect of structural style and material property to the stress level,deformation distribution and the power sensitivity under various loads effectively.The features of the structure of the engine rotor system were presented and further optimization was concluded.
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Key words:
- aero engine /
- structural efficiency /
- rotor system /
- stress level /
- dynamic response
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[1] Norris F D,William A H.Comparison of the structural efficiency of panels having straight-web and curved-web y-section stiffeners [R].NACA Technical Note 1787,1949. [2] Norris F D,Walter B R.Structural efficiency of orthotropic cylindrical shells subjected to axial compression [R].New York:AIAA 2nd Aerospace Sciences Meeting,1965. [3] Jerry G.W,Martin M M.Analytical and experimental study of structurally efficient composite hat-stiffened panels loaded in axial compression [R].Denver,United States:ASME/AIAA/SAE 16th Structures,Structural Dynamics,and Materials Conference,1975. [4] Williams J G,Stein M.Buckling behavior and structural efficiency of open-section stiffened composite compression panels[J].Journal of AIAA,1976,14(11):1618-1626. [5] Manuel S,Jerry G W.Buckling and structural efficiency of sandwich-blade stiffened composite compression panels [R].NASA Report,TP-12691,1978. [6] Fischler J E.Structural design of supersonic cruise aircraft[R].Hampton,Virginia:Proceedings of the SCAR conference,1976. [7] Storace A F.Turbine engine structural efficiency determination [R].AIAA 89-2571,1989. [8] Li S K,Ng Y C.Measuring the productive efficiency of a group of firms[J].International Advances in Economic Research,1995,1(4):377-390. [9] Fare R,Zelenyuk V.On aggregate farrell efficiencies[J].European Journal of Operational Research,2003,146(3):615-620. [10] Kwak J S,Ahn J,Han J C.Effects of rim location,rim height,and tip clearance on the tip and near tip region heat transfer of a gas turbine blade[J].International Journal of Heat and Mass Transfer,2004,47(26):5651-5663. [11] LI Wei,QIAO Weiyang,SUN Dawei.Tip clearance flows in turbine cascades[J].Chinese Journal of Aeronautics,2008,21(3):193-199. [12] Srinivasan M R,Gopal G.Structural efficiency of incomplete block designs[J].Statistics & Probability Letters,1996,30(3):211-214. [13] 陈光,洪杰,马艳红.航空燃气涡轮发动机结构[M].北京航空航天大学出版社,2010. [14] 张大义,马艳红,梁智超,等.整机结构设计的评估方法-结构效率[J].航空动力学报,2010,25(10):2070-2176. ZHANG Dayi,MA Yanhong,LIANG Zhichao,et al.Evaluation method on whole engine structural design:structural efficiency[J].Journal of Aerospace Power,2010,25(10):2070-2176.(in Chinese) [15] 张大义,洪杰,梁智超.航空发动机转子系统的结构效率评估方法研究[J].振动与冲击,2010,29(增刊):49-52. ZHANG Dayi,HONG Jie,LIANG Zhichao.Evaluation method on rotor structural structural efficiency[J].Journal of Vibration and Shock,2010,29(Sup.):49-52.(in Chinese)
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