摘要
利用有限元软件ANSYS对某小型直升机尾梁管进行了模态分析,获得了尾梁管的基本振型和相关频率,并根据某一飞行状态下的载荷对尾梁管进行谐响应分析,得到尾梁管各节点沿虚拟轴X、Y、Z向的位移-频率曲线。在此基础上对尾梁管的谐响应规律进行分析,得出尾梁管在1阶和2阶模态频率时对直升机整机的振动水平影响最大。
By using finite element software ANSYS, the modal analysis for one light helicopter tail beam tube was done for the basic vibration mode and related frequency. And according to the load on tail beam tube in helicopter flight state, a harmonic response analysis was carried out to get the displacement frequency curve of each node along the virtual axis X, Y, Z. Based on this, the tail beam tube harmonic response law was analyzed. It is concluded that the biggest influence of the tail beam tube on the vibration of helicopter is in the first order and second order of modal frequencies.
出处
《机械工程与自动化》
2013年第1期64-66,共3页
Mechanical Engineering & Automation
关键词
模态分析
谐响应分析
ANSYS
直升机尾梁管
modal analysis
harmonic response analysis
ANSYS
helicopter tail beam tube
