Dynamic characteristics of tower structure based on finite element analysis

Author

Liu, Tianliang ; Shang, Deguang ; Ren, Chonggang ; Nan, Jingyang

Author_Institution

Coll. of Mech. Eng. & Appl. Electron. Technol., Beijing Univ. of Technol., Beijing, China

fYear

2011

fDate

7-10 Aug. 2011

Firstpage

1379

Lastpage

1383

Abstract

Natural frequencies of tower structure under two damage conditions were obtained by dynamic testing and finite element analysis. The results showed that finite element model is correct, so seven kinds of damage conditions for the tower structure were analyzed by finite element analysis. Effects of various damage cases on the natural frequency were studied, it could be found that effects of the same damage at different locations on the natural frequency were different. Effects of various severities of damage on the natural frequency were identified, and found that effects of various severities of damages on the natural frequency could be divided into three stages. These results can provide a valuable reference for damage detection by measuring change of the natural frequency.

Keywords

dynamic testing; finite element analysis; fracture; structural engineering; damage condition; dynamic characteristics; dynamic testing; finite element analysis; natural frequency; tower structure; Analytical models; Finite element methods; Frequency conversion; Frequency measurement; Modal analysis; Poles and towers; Testing; Dynamic testing; Finite element analysis; Natural frequency; Tower structure;

fLanguage

English

Publisher

ieee

Conference_Titel

Mechatronics and Automation (ICMA), 2011 International Conference on

Conference_Location

Beijing

ISSN

2152-7431

Print_ISBN

978-1-4244-8113-2

Type

conf

DOI

10.1109/ICMA.2011.5985777

Filename

5985777