Applied Mathematics and Mechanics (English Edition) ›› 2017, Vol. 38 ›› Issue (5): 625-646.doi: https://doi.org/10.1007/s10483-017-2192-9

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Analytical analysis for vibration of longitudinally moving plate submerged in infinite liquid domain

Yanqing WANG1, J. W. ZU2   

  1. 1. Department of Mechanics, Northeastern University, Shenyang 110819, China;
    2. Department of Mechanical and Industrial Engineering, University of Toronto, Toronto M5S 3G8, Canada
  • Received:2016-10-12 Revised:2016-12-23 Online:2017-05-01 Published:2017-05-01
  • Contact: Yanqing WANG E-mail:wangyanqing@mail.neu.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Nos. 11302046 and 11672071) and the Fundamental Research Funds for the Central Universities (No. N150504003)

Abstract:

The vibration of a longitudinally moving rectangular plate submersed in an infinite liquid domain is studied analytically with the Rayleigh-Ritz method. The liquid is assumed to be incompressible, inviscid, and irrotational, and the velocity potential is used to describe the fluid velocity in the whole liquid field. The classical thin plate theory is used to derive mechanical energies of the traveling plate. As derivative of transverse displacement with respect to time in the compatibility condition equation exists, an exponential function is introduced to depict the dynamic deformation of the moving plate. It is shown that this exponential function works well with the RayleighRitz method. A convergence study shows a quick convergence speed for the immersed moving plate. Furthermore, the parametric study is carried out to demonstrate the effect of system parameters including the moving speed, the plate location, the liquid depth, the plate-liquid ratio, and the boundary condition. Results show that the above system parameters have significant influence on the vibration characteristics of the immersed moving plate. To extend the study, the method of added virtual mass incremental (AVMI) factor is used. The results show good agreement with those from the Rayleigh-Ritz method.

Key words: free vibration, viscoelasticity, plane problem, Airy stress function, identity relation, integral constitutive relation, Rayleigh-Ritz method, longitudinally moving plate, added virtual mass incremental (AVMI) factor method, fluid-structure interaction

2010 MSC Number: 

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