Research on natural frequency of structure considering elastic joint with interval uncertainty

Jiangpan Chen1, Yan Liu2, Dong Wang3, Weiwen Zhang4, Xu Liu5

Beijing Institute of Electronic System Engineering, Beijing, China

2Corresponding author

E-mail: 1chenjiangpan@hotmail.com, 2erica8027@163.com, 313520505058@163.com, 4504935834@126.com, 5liux923@163.com

Received 19 September 2017; accepted 27 September 2017

DOI https://doi.org/10.21595/vp.2017.19208

 

Abstract. An efficient method, namely fixed interface mode synthesis-interval factor method (FIMS-IFM), is proposed to calculate the natural frequency of structure considering elastic joint with interval uncertainty. In this proposed method, the interval uncertain elastic joint is treated as spatial beam element with interval uncertain material parameters. Additionally, both the proposed method and Monte-Carlo simulation method are used to calculate the natural frequency of a specially designed structure with interval uncertain elastic joint. A meaningful conclusion can be acquired via comparing the calculation results of the two methods that, FIMS-IFM is correct and high-efficiency.

Keywords: interval uncertainty, elastic joint, natural frequency, fixed interface mode synthesis method, interval factor method.

References

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Cite this article

Chen Jiangpan, Liu Yan, Wang Dong, Zhang Weiwen, Liu Xu Research on natural frequency of structure considering elastic joint with interval uncertainty. Vibroengineering PROCEDIA, Vol. 14, 2017, p. 197‑202.

 

© JVE International Ltd. Vibroengineering PROCEDIA. Oct 2017, Vol. 14. ISSN 2345-0533