Simulated test and numerical simulation of aeroengine whole engine response during blade out event
-
摘要: 依据大涵道比涡扇发动机结构设计了叶片丢失试验台,开展了一系列模拟叶片丢失试验,并采用显式有限元方法进行了数值仿真,研究了发动机叶片丢失后整机结构响应与载荷传递规律。结果表明:丢失叶片与机匣存在叶尖与叶身两次撞击,对应的加速度曲线存在两个响应峰值;转子转速越高,加速度响应幅值越大。叶片飞断后转子不平衡载荷传递路径为前轴承支承-中轴承支承-中介支板-机匣结构;叶片撞击机匣导致的冲击载荷则由风扇机匣向后传递,最终传给吊装结构;发动机承受的载荷是由不平衡和冲击影响耦合得到,其中冲击载荷为主要部分。该研究为掌握真实发动机叶片丢失下整机响应规律提供了试验模拟方法与数值仿真分析工具。Abstract: Blade off test rig was designed according to the structures of typical big bypass ratio turbofan engine structure. A series of simulated blade off tests and numerical simulation using the explicit finite element method were carried out to investigate the whole engine response and load transmitting path. It was found that the released blade impacted the casing with its tip and body respectively, whilst two crests existed in the acceleration curves. The amplitude of acceleration increased with the blade release speed. The rotor unbalance load transmitted from the front bearing, to medium bearing, intermediate supporting plate, and finally the casing. The impact load caused by the released blade transmitted backward from the fan casing, and finally to the mounting structure. The impact load played the major role in engine load due to blade out event with respect to rotor unbalance load. The investigation can provide the modeling testing approach and numerical analysis tool for the study of whole engine response of aeroengine under blade out event condition.
-
Key words:
- aeroengine /
- blade out event /
- whole engine response /
- sub-scale test /
- transient dynamic simulation
-
[1] 宣海军,陆晓,洪伟荣,等.航空发动机机匣包容性研究综述[J].航空动力学报,2010,25(8):1860-1870.XUAN Haijun,LU Xiao,HONG Weirong,et al.Review of aeroengine case containment research[J].Journal of Aerospace Power,2010,25(8):1860-1870.(in Chinese) [2] 中国民用航空总局.航空发动机适航规定:CCAR33-R1[S].北京:中国民用航空总局,2005:105. [3] 何庆,宣海军,刘璐璐.某型发动机一级风扇机匣包容性数值仿真[J].航空动力学报,2012,27(2):295-299.HE Qing,XUAN Haijun,LIU Lulu.Numerical analysis of real aeroengine firststage fan blade containment[J].Journal of Aerospace Power,2012,27(2):295-299.(in Chinese) [4] 何庆,宣海军,刘璐璐.航空发动机风扇叶片撞击机匣的响应机理研究[J].兵工学报,2011.32(增刊1):143-148.HE Qing,XUAN Haijun,LIU Lulu.Research on response mechanism of impact of aeroengine blade against fan case[J].Acta Armamentarii,2011,32(Suppl.1):143-148.(in Chinese) [5] HE Q,XIE Z,XUAN H J,et al.Multiblade effects on aeroengine blade containment[J].Aerospace Science and Technology,2016,49(2):101-111. [6] HE Q,XUAN H J,LIAO L F,et al.Simulation methodology development for rotating blade containment analysis[J].Journal of Zhejiang University(Science A),2012,13(4):239-259. [7] 洪杰,郝勇,张博,等,叶片丢失激励下整机力学行为及其动力特性[J].航空发动机,2014,40(2):19-23.HONG Jie,HAO Yong,ZHANG Bo,et al.Mechanical behaviors and dynamic characteristics of turbofan engine due to fan blade off[J].Aeroengine,2014,40(2):19-23.(in Chinese) [8] STALLONE M J.Blade loss transient dynamic analysis of turbomachinery[J].AIAA Journal,1983,21(8):1134-1138. [9] LAWRENCE C,CARNEY K,GALLARDO V.Simulation of aircraft engine bladeout structural dynamics[R].NASA/TM2001-210957,2001. [10] LAWRENCE C,CARNEY K,GALLARDO V.A study of fan stagecasing interaction models[R].NASA/TM-2003-212215,2003. [11] CARNEY K S,LAWRENCE C,CARNEY D V.Aircraft engine bladeout dynamics[R].Dearborn,Michigan,USA:the 7th International LS-DYNA Users Conference,2003. [12] SHMOTIN Y,GABOV D,RYABOV A,et al.Numerical analysis of aircraft engine fan bladeout[R].Sacramento,CA,USA:AIAA/ASME/SAE/ASEE Joint Propulsion Conference,2006. [13] HOZIC' D.Mechanical loads on a turbo fan engine structure at blade off[D].Lule,Sweden:Lule University of Technology,2009. [14] COSME N,CHEVROLET D,BONINI J.Prediction of engine loads and damages due to fan blade off event[R].April,Denver,Colorado:the 43rd AIAA/ASME/ASCE/AHS/ASC Structures,Structural Dynamics,and Materials Conference,2002.
[15] COSME N,CHEVROLET D,BONINI J,et al.Prediction of transient engine loads and damage due to hollow fan bladeoff[J].Revue Européenne des léments,2002,11(5):651-666. [16] HEIDARI M,CARLSON D L,SINHA S,et al.An efficient multidisciplinary simulation of engine fanblade out event using MD Nastran[R].AIAA2008-092407,2008. [17] MSC Software公司.采用MD Nastran对航空发动机叶片飞脱进行高效的多学科仿真[J].航空制造技术,2009(2):74-77.MSC.Software Corporation.An efficient multidisciplinary simulation of engine fanblade out event using MD Nastran[J].Aeronautical Manufacturing Technology,2009(2):74-77.(in Chinese) [18] HUSBAND J B.Developing an efficient FEM structural simulation of a fan blade off test in a turbofan jet engine[D].Saskatoon,Saskatchewan,Canada:University of Saskatchewan,2007. [19] SINHA S K,DORBALA S.Dynamic loads in the fan containment structure of a turbofan engine[J].Journal of Aerospace Engineering,2009,22(3):260-269. [20] JAIN R.Prediction of transient loads and perforation of engine casing during bladeoff event of fan rotor assembly[R].Rhode Island,USA:International Symposium on Structural Failure and Plastcity,2010. [21] LEONTEV M K.Simulation of fan blade out for a high bypass ratio engine[J].Russia Aeronautics,2014,57(2):154-161. [22] SENGOZ K,KAN S,ESKANDARIAN A.Development of a generic gas turbine engine fan bladeout fullfan rig model[R].DOT/FAA/TC-14/43,2015.
点击查看大图
计量
- 文章访问数: 864
- HTML浏览量: 4
- PDF量: 711
- 被引次数: 0