摘要
模态分析是机械结构动力学分析的基础。采用有限单元法,利用ANSYS软件以桁架结构为例进行分析,求得桁架的自由模态参数,并通过加强筋的合理布置,增强桁架的结构刚度,提升固有频率,远离实际工作频率以防止共振。
Modal analysis is the foundation of dynamic analysis.The finite element method is analyzed by using ANSYS software taking truss structure as a example.It would provide modal parameter like natural frequency,and we can get a better design according to the parameter,like enhancing the rigidity of truss structure and improve the natural frequency to avoid resonating.
出处
《宇航计测技术》
CSCD
2012年第6期17-20,24,共5页
Journal of Astronautic Metrology and Measurement
关键词
模态分析
固有频率
桁架结构
振型
有限元法
Modal analysis Natural frequency Truss structruc ture Mode of vibration Finite element method
