压力容器2017，Vol.34Issue(3)：30-37,8.DOI:10.3969/j.issn.1001-4837.2017.03.005
夹套式塔器的固有频率计算方法研究
Research of Natural Frequency Calculating Method for Jacketed Tower
摘要
Abstract
As a kind of special tower,how to accurately calculate its natural frequency is the basis for strength calculation and vibration analysis.Based on NB/T 47041-2014 Tower Container,the jacketed tower of H/Di≥20 is simplified into a model of equal diameter but variable wall thickness.And a reduction factor α of sectional moment of inertia is used to describe the rigidity of the model.The plots of α which is related to Di/Dji,H/Di,δj/δt and Hj/H are calculated and drawn.According to these plots,this paper analyzes the weight of H/Di,δj/δt and Hj/H and eventually the formula of α is expressed.The deviation of results calculated by the method proposed in this paper and numerical simulation is less than 3％,this method can be a reference for calculating the natural frequency of jacketed tower.关键词
夹套式塔器/折减系数/固有频率Key words
jacketed tower/reduction factor/natural frequency分类
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谭蔚,樊显涛,徐乐,杜怡安..夹套式塔器的固有频率计算方法研究[J].压力容器,2017,34(3):30-37,8.
