摘要
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 finite element model of the airplane landing gear was established with ABAQUS. Inhere frequencies and mode shapes of landing gear under fixed boundary conditions were worked out by using Lanczos which is the most popular method to solve modal analysis in engineering;the lowqevel natural frequency was analyzed by the brake-induced vibration test. The simula-tion and test results showed the first natural frequency is about 30Hz. The result of modal analysis can be used to the design and improvement of landing gear.
出处
《现代制造工程》
CSCD
北大核心
2012年第11期10-13,45,共5页
Modern Manufacturing Engineering
基金
国家自然科学基金项目(51105374)
