摘要
以跨座式单轨车辆转向架构架为研究对象,建立了构架的几何模型和有限元模型。介绍了构架结构模型的建模技巧、建模过程、建模单元特性以及有限元模型的创建技巧。根据模态分析的理论基础对构架的有限元模型进行了自由模态分析,通过计算得出了构架前16阶模态的固有振动频率和振型模态,确定了构架结构的动态特性,指出构架中振动的薄弱环节。为构架动态特性的改进设计和有效地避免共振现象的发生提供了参考,对进一步构架的动力学分析也有重要的意义。
The straddle-type monorail vehicle bogie frame is regarded as a research object and bogie geometric model and finite element model are created.Then modeling technique for frame structure,modeling process as well as model element characteristics and the skill of finite element modeling are introduced.According to the theory of modal analysis,the free modal of frame finite element model is analyzed,and the natural frequency and vibration mode of former 16-steps mode of frame are computed.At the same time the structural dynamic characteristics of the frame are determined and the weak of frame in the vibration is pointed out,which will provide reference for improving design of dynamic characteristics,effectively preventing the phenomenon of resonance.Thus it is significant for further dynamic analysis.
出处
《机械设计与制造》
北大核心
2011年第11期222-223,共2页
Machinery Design & Manufacture
基金
国家科技支撑计划课题(2007BAG06B01)
关键词
转向架构架
有限元
模态分析
Bogie frame
Finite element
Modal analysis
