基于有限元法的挖掘机履带架模态分析  

The Modal Analysis of Excavator Track Frame based on the Finite Element Method

作　　者：翟洪岩[1] 

机构地区：[1]中国人民解放军空军航空大学航空机械工程系,吉林长春130022

出　　处：《科学之友（下）》2011年第10期21-22,共2页Friend of Science Amateurs

摘　　要：在挖掘机中存在很多周期性变化的激振源,如齿轮的啮合、辊子回转过程中的冲击振动等。如果挖掘机某一零部件的固有频率与上述激振源的频率重合或成整数倍关系时,这个零部件就有可能会发生共振,严重时造成零部件破坏或挖掘机不能正常工作。履带架是挖掘机的主要支承部件,如果履带架发生共振,将会造成严重的后果。因此,在挖掘机设计时,有必要了解履带架的固有频率和振型,利用有限元分析软件ANSYS进行模态分析,避免作业时产生振动过大的情况。There are many cyclical changes in the excitation source in excavator,such as meshing gears,rollers rotating in the process of shock and vibration.If the excavator with a natural frequency components of the frequency of the excitation source into a coincidence or a multiple relationship,there may be parts of this resonance,causing serious damage or excavator parts does not work.Crawler excavator is the main supporting frame parts,if the track frame resonance,will result in serious consequences.Therefore,in excavator design,it is necessary to understand and track the natural frequency of vibration of the frame type,the use of finite element analysis software ANSYS modal analysis,to avoid excessive vibration generated when the job situation.

关 键 词：挖掘机 履带架 有限元 

分 类 号：TU621[建筑科学—建筑技术科学]