塔式起重机结构动态分析的两种有限元模型及比较

Structure Dynamic Analysis with Two Fi-nite Element Models for Tower Crane andTheir Comparison

本文分别应用完整的杆系有限元模型和等效有限元模型对塔式起重机结构进行了动力分析,指出使用合理的等效单元代替复杂的杆系框架结构可以大大减少单元和自由度数,在使计算简化的同时保持了良好的分析精度,对于同类型塔机的动力分析具有很好的参考价值。

<bstract>This paper analyzes dynamically the tower crane structure with finite element model of integrated bar member system and the equivalent finite element model. It points out that if we use rational equivalent element to replace complicated bar frame structure, we can reduce the number of elements and degrees of freedom, significantly, and keep the result accurately. It can be a reference to the same type of tower crane.