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利用ABAQUS有限元分析软件,以大型结构体飞机起落架为研究对象,采用工程上常用的Lanczos法计算起落架固定边界条件下的前四阶固有频率和振型;根据刹车振动试验结果分析出起落架的低阶固有频率,仿真和试验结果都表明起落架的1阶固有频率都在30Hz左右,从而为起落架的设计和改进提供了可靠的依据。
The ABAQUS finite element analysis software is used to study the large structure aircraft landing gear. The Lanczos method used in engineering is used to calculate the first four natural frequencies and modes under the fixed landing gear condition. According to the brake vibration test results, The low order natural frequencies of the landing gear, the simulation results and the experimental results show that the first order natural frequencies of the landing gear are both around 30 Hz, which provides a reliable basis for the design and improvement of the landing gear.