摘要
在传统的直立塔设备固有频率和振型的计算中,将塔设备简化为悬臂梁计算模型,但实际塔的薄壁圆筒结构与梁模型不符,为此对焦炭塔建立有限元分析模型进行模态分析,得到焦炭塔的固有频率和振型,计算分析表明,由于焦碳塔特殊的结构特点使得焦炭塔的振动特性与传统大型直立设备简化为悬臂梁计算模型所得振动特性相比有所不同,因此焦炭塔结构的计算中涉及到高阶振型与固有频率时,不宜简化为悬臂梁计算模型。
In traditional calculation of natural frequency and vibration model of vertical tower, tower is usually simplified to projecting beam. Because the thin wall cylinder structure of practical tower is different with beam model, FEA model of coke drum being set up to analyse the modal, the results of natural frequency and vibration shows that the vibration performance of coke drum is different with the results when simplifying largesized vertical vessel to projecting beam because of the special structure of coke drum. So it is improper to simplify coke drum to projecting beam considering high order vibration model and natural frequency.
出处
《压力容器》
北大核心
2005年第8期24-28,共5页
Pressure Vessel Technology
关键词
焦炭塔
固有频率
振型
coke dram
natural frequency
vibration model
