Vibration of 2D-FGSW timoshenko beams under a moving harmonic load

Vu Thi An Ninh, Le Thi Ngoc Anh, Nguyen Dinh Kien
Author affiliations

Authors

  • Vu Thi An Ninh Graduate University of Science and Technology, VAST, 18 Hoang Quoc Viet, Ha Noi, Viet Nam
  • Le Thi Ngoc Anh Graduate University of Science and Technology, VAST, 18 Hoang Quoc Viet, Ha Noi, Viet Nam
  • Nguyen Dinh Kien University of Transport and Communications, 3 Cau Giay, Ha Noi, Viet Nam

DOI:

https://doi.org/10.15625/2525-2518/58/5/14936

Keywords:

2D-FGSW Timoshenko beam, moving harmonic load, vibration analysis, finite element formulation

Abstract

Vibration of two-directional functionally graded sandwich (2D-FGSW) Timoshenko beams under a moving harmonic load is investigated. The beams consist of three layers, a homogeneous core and two functionally graded skin layers with the material properties continuously varying in both the thickness and length directions by power functions. A finite element formulation is derived and employed to compute the vibration characteristics of the beams. The obtained numerical result reveals that the material inhomogeneity and the layer thickness ratio play an important role on the natural frequencies and dynamic response of the beams. A parametric study is carried out to highlight the effects of the power-law indexes, the moving load speed and excitation frequency on the vibration characteristics of the beams.  The influence of the beam aspect ratio on the vibration of the beams is also examined and discussed. 

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Published

15-12-2020

How to Cite

[1]
V. T. A. Ninh, L. T. N. Anh, and N. D. Kien, “Vibration of 2D-FGSW timoshenko beams under a moving harmonic load”, Vietnam J. Sci. Technol., vol. 58, no. 6, pp. 760–775, Dec. 2020.

Issue

Section

Mechanical Engineering - Mechatronics