Applied Mathematics and Mechanics (English Edition) ›› 2017, Vol. 38 ›› Issue (2): 161-172.doi: https://doi.org/10.1007/s10483-017-2170-9

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Vibration of axially moving beam supported by viscoelastic foundation

Haijuan ZHANG1,2, Jian MA2, Hu DING1,3, Liqun CHEN1,3,4   

  1. 1. Shanghai Institute of Applied Mathematics and Mechanics, Shanghai University, Shanghai 200072, China;
    2. School of Mechanical Engineering, Anhui University of Technology, Maanshan 243032, Anhui Province, China;
    3. Shanghai Key Laboratory of Mechanics in Energy Engineering, Shanghai University, Shanghai 200072, China;
    4. Department of Mechanics, College of Sciences, Shanghai University, Shanghai 200444, China
  • Received:2016-05-16 Revised:2016-09-25 Online:2017-02-01 Published:2017-02-01
  • Contact: Liqun CHEN E-mail:lqchen@staff.shu.edu.cn
  • Supported by:

    Project supported by the State Key Program of the National Natural Science Foundation of China (No.11232009) and the National Natural Science Foundation of China (Nos.11372171 and 11422214)

Abstract:

In this paper, transverse vibration of an axially moving beam supported by a viscoelastic foundation is analyzed by a complex modal analysis method. The equation of motion is developed based on the generalized Hamilton's principle. Eigenvalues and eigenfunctions are semi-analytically obtained. The governing equation is represented in a canonical state space form, which is defined by two matrix differential operators. The orthogonality of the eigenfunctions and the adjoint eigenfunctions is used to decouple the system in the state space. The responses of the system to arbitrary external excitation and initial conditions are expressed in the modal expansion. Numerical examples are presented to illustrate the proposed approach. The effects of the foundation parameters on free and forced vibration are examined.

Key words: natural frequency, forced vibration, axially moving beam, viscoelastic foundation, complex modal analysis

2010 MSC Number: 

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