起重机吊臂结构有限元模态分析

Vibration Mode Analysis of Crane Jib using Finite Element Method

对起重机吊臂进行了有限元模态分析,得出了各阶模态下吊臂的固有频率和振型,找到了吊臂振动中的危险区域,为设计和改造提供理论依据。

The natural frequencies and modes of vibration of the crane jib are worked out in different modes using finite element method. The risk vibration zones of jibs are found out. This method of mode analysis, whose reliability has been confirmed by the intensity measurement, provides basis for the design and reconstruction of crane jib.