航空发动机机匣包容性打靶试验与仿真研究  

Targeting Experiment and Simulation Research on Casing Containment of Aero-Engine

作　　者：段玥晨[1] 章定国[2] 陈思佳[3] 廖连芳[4,5] 

机构地区：[1]郑州大学机械工程学院,河南郑州450001 [2]南京理工大学理学院,江苏南京210094 [3]浙江大学宁波理工学院,浙江宁波315100 [4]北京航空航天大学能源与动力工程学院,北京100191 [5]中航商用航空发动机有限责任公司,上海201108

出　　处：《计算机仿真》2014年第4期106-109,146,共5页Computer Simulation

基　　金：航空推进技术验证项目(APTD-1104-**)

摘　　要：为研究某型号航空发动机在受到叶片正面冲击时的包容性,利用滑膛炮试验系统对航空发动机真实机匣的包容性进行打靶试验,并用高速摄影系统对叶片的飞行过程进行记录。通过六组试验发现:发生1次包容事件与5次非包容事件,叶片初始速度越高越易出现非包容事件。为验证有限元仿真的准确性,使用显式有限元动力分析软件LS-DYNA对试验过程进行数值仿真,仿真结果与试验较为吻合。结果表明,数值仿真结果具有较好的准确性,仿真可以对真实发动机机匣的包容性给出较正确的预估,试验结果对航空发动机的机匣包容性设计有一定的参考价值。To study the containment capability of a particular aero engine impacting by the blade from the front, the targeting experiments for the containment capability of real casing were investigated by using a smoothbore gun testing system. The flying processes of the blades were photographed by high speed handling system. Six tests were carried out to research the containment of the casing. It was found that there are one containment event and five un containment events, and the un containment events are more liable to occur when the initial velocity of the blade is higher. The numerical simulation for the experimental process was studied by using the explicit FEM software LS DYNA to verify the accuracy of the FEM simulation. And the numerical simulation results agree well with the experi ments. It is shown that the numerical simulation is of good accuracy, and the simulation can give appropriate esti mates to the containment capability of real aero engine casing. The numerical simulation and targeting experiment have some reference value to the design of the containment capability of real aero engine casing.

关 键 词：航空发动机 机匣 包容性 打靶试验 数值仿真 

分 类 号：V232[航空宇航科学与技术—航空宇航推进理论与工程]