Study on new method for modal parameters identification of stiffened plate with four clamped edges

Ma Tian Bing1, Du Fei2, Liu Jian3

College of Mechanical Engineering, Anhui University of Science and Technology, Anhui Huainan, China

2Corresponding author

E-mail: 1dfmtb@163.com, 2dufeimtb@163.com, 31016052370@qq.com

Received 8 August 2017; accepted 14 August 2017

DOI https://doi.org/10.21595/vp.2017.18972

 

Abstract. In order to accurately and rapidly identify the vibration characteristic parameters of nonlinear stiffened plate structure, Rayleigh-Ritz method is used for modeling. First, the stiffened plate with four edges clamped is divided into plate and stiffeners. The plate is considered to be geometrically nonlinear, and the stiffeners are taken as Euler beams to solve the deformation energy and kinetic energy. Then, natural frequency of stiffened plate is solved by Rayleigh-Ritz method. Finally, stiffened plate structure in the laboratory is selected as the research object, results from Rayleigh - Ritz method calculation are compared with ANSYS and the swept frequency method results. The results show that the solution in this paper can be correct, which lays a good foundation for further nonlinear active control experiment.

Keywords: stiffened plate, four edges clamped, Rayleigh-Ritz method, Natural frequency.

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Cite this article

Bing Ma Tian, Fei Du, Jian Liu Study on new method for modal parameters identification of stiffened plate with four clamped edges. Vibroengineering PROCEDIA, Vol. 14, 2017, p. 192‑196.

 

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