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Structural Engineering and Mechanics
  Volume 59, Number 6, September25 2016 , pages 1019-1037

A dynamic foundation model for the analysis of plates on foundation to a moving oscillator
Phuoc T. Nguyen, Trung D. Pham and Hoa P. Hoang

    This paper proposes a new foundation model called \"Dynamic foundation model\" for the dynamic analysis of plates on foundation subjected to a moving oscillator. This model includes a linear elastic spring, shear layer, viscous damping and the special effects of mass density parameters of foundation during vibration. By using finite element method and the principle of dynamic balance, the governing equation of motion of the plate travelled by the oscillator is derived and solved by the Newmark\'s time integration procedure. The accuracy of the algorithm is verified by comparing the numerical results with the other numerical results in the literature. Also, the effects of mass and damping ratio of system components, stiffness of suspension system, velocity of moving oscillator, and dynamic foundation parameters on dynamic responses are investigated. A very important role of these factors will be shown in the dynamic behavior of the plate.
Key Words
    Winkler foundation; pasternak foundation; dynamic foundation; mass density of foundation; dynamic analysis of plate; moving oscillator; FEM
Phuoc T. Nguyen : Department of Civil Engineering - Architecture, Ho Chi Minh City Open University, 97 Vo Van Tan St., Ho Chi Minh City, Vietnam
Trung D. Pham : Department of Civil Engineering, Quang Trung University, Dao Tan St., Qui Nhon City, Vietnam
Hoa P. Hoang : Department of Construction of Bridge and Road, University of Science and Technology, The University of Danang, 54 Nguyen Luong Bang St., Danang City, Vietnam

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