石油化工设备技术 ›› 2019, Vol. 40 ›› Issue (4): 8-12.doi: 10.3969/j.issn.1006-8805.2019.04.002

• 静设备 • 上一篇    下一篇

基于ANSYS的塔器自振周期计算

李俊儒   

  1. 中石化宁波工程有限公司,上海 200030
  • 收稿日期:2019-03-04 接受日期:2019-06-25 出版日期:2019-11-20 发布日期:2019-11-20
  • 作者简介:李俊儒,男,2012年毕业于福州大学化工过程机械专业,工学硕士,主要从事压力容器设计工作,工程师。Email:lijr.snec@sinopec.com

Calculation of Natural Vibration Period of Towers Based on ANSYS

Li Junru   

  1. SINOPEC Ningbo Engineering Company Limited, Shanghai, 200030
  • Received:2019-03-04 Accepted:2019-06-25 Online:2019-11-20 Published:2019-11-20

摘要: 借助有限元软件ANSYS,分别对“NB/T 47041标准释义及算例”中的4台塔器(例题1~例题4)进行了模态分析,结果表明:对于截面特性不变或变化较小的塔器(例题1、例题3、例题4),ANSYS数值解与NB/T 47041中的解法误差很小;对于截面特性变化较大的塔器(例题2),集中质量法、矩阵迭代法的精度受制于分段数,数值解更为准确。

关键词: ANSYS, 塔器, 自振周期, 振型函数

Abstract: The modal analysis of four towers (Example 1st to 4th) in "NB/T 47041 standard interpretation and calculation example" is carried out with the finite element software ANSYS. The results show that the error between the numerical solution of ANSYS and the methods in standard NB/T 47041 is very small for the towers with no change or little change in section characteristics (Example 1, 3 and 4). And for the towers with big change in section characteristics (Example 2), the accuracy of the lumped mass method and matrix iteration method is subject to the number of sections and the numerical solution is more accurate.

Key words: ANSYS, towers, natural vibration period, mode shape function