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Browsing by Author Dao, Huy Bich

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  • 83.pdf.jpg
  • Article

  • Buckling analysis of eccentrically stiffened functionally graded circular cylindrical thin shells under mechanical load

    • Authors: Nguyen, Thi Phuong; Dao, Huy Bich (2013)

  • An analytical approach is presented to investigate the linear buckling of eccentrically stiffened functionally graded thin circular cylindrical shells subjected to axial compression, external pressure and tosional load. Based on the classical thin shell theory and the smeared stiffeners technique, the governing equations of buckling of eccentrically stiffened functionally graded circular cylindrical shells are derived. The functionally graded cylindrical shells with simply supported edges are reinforced by ring and stringer stiffeners system on internal and (or) external surface. The resulting equations in the case of compressive and pressive loads are solve directly, while in the cas...
  • 71.pdf.jpg
  • Article

  • Buckling Analysis of Functionally Graded Annular Spherical Shells and Segments Subjected to Mechanic Loads

    • Authors: Dao, Huy Bich; Nguyen, Thi Phuong (2013)

  • An analytical approach is presented to investigate the buckling of functionally graded annular spherical segments subjected to compressive load and radial pressure. Based on the classical thin shell theory, the governing equations of functionally graded annular spherical segments are derived. Approximate solutions are assumed to satisfy the simply supported boundary condition of segments and Galerkin method is applied to obtain closed-form relations of bifurcation type of buckling loads. Numerical results are given to evaluate effects of inhomogeneous and dimensional parameters to the buckling of structure.
  • 36.pdf.jpg
  • Article

  • Nonlinear Analysis on Flutter of FGM Plates Using Ilyushin Supersonic Aerodynamic Theory

    • Authors: Pham, Hong Cong; Nguyen, Dinh Duc; Dao, Huy Bich (2015)

  • This paper deals with an analysis on the supersonic flutter characteristics of Functionally Graded (FGM) plate under aerodynamic loads. Based upon the classical plate theory and the Ilyushin supersonic aerodynamic theory, the governing equations of FGM plates lying in the moving supersonic airflow are derived. The application of Galerkin method with an approximate two-terms Fourier expansion solution leads to a set of nonlinear auto-oscillation equations for determining the nonlinear flutter response and critical velocity. Numerical results are obtained by fourth-order Runge-Kutta method. The influences of the material properties, geometrical parameters and initial conditions on the s...
  • 26.pdf.jpg
  • Article

  • Nonlinear Analysis on Flutter of Functional Graded Cylindrical Panels on Elastic Foundations Using the Ilyushin Nonlinear Supersonic Aerodynamic Theory

    • Authors: Tran, Quoc Quan; Dao, Huy Bich; Nguyen, Dinh Duc (2015)

  • Based on classical shell theory with the geometrical nonlinearity in von Karman-Donell sense and the Ilyushin nonlinear supersonic aerodynamic theory, this paper successfully formulated the equations of motion of the functionally graded cylindrical panel on elastic foundations under impact of a moving supersonic airflow and found the critical velocity of supersonic airflow that make the panel unstable. This paper also used the Bubnov-Galerkin and Runge – Kutta methods to solve the system of nonlinear vibration differential equations and illustrated effects of initial dynamical conditions, shape and geometrical parameters, material constituents and elastic foundations on aerodynamic re...
  • 195.pdf.jpg
  • Article

  • On the lateral oscillation problem of beams subjected to axial load

    • Authors: Dao, Huy Bich; Nguyen, Dang Bich (2004)

  • This paper approaches the problem of lateral oscillation of beams subjected to axial load by means of seeking the exact solution of the linear Matheu equation with the periodic function h(t) having a determined form.

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Browsing by Author Dao, Huy Bich

Jump to: 0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
or enter first few letters:  
Showing results 1 to 5 of 5
  • 83.pdf.jpg
  • Article

  • Buckling analysis of eccentrically stiffened functionally graded circular cylindrical thin shells under mechanical load

    • Authors: Nguyen, Thi Phuong; Dao, Huy Bich (2013)

  • An analytical approach is presented to investigate the linear buckling of eccentrically stiffened functionally graded thin circular cylindrical shells subjected to axial compression, external pressure and tosional load. Based on the classical thin shell theory and the smeared stiffeners technique, the governing equations of buckling of eccentrically stiffened functionally graded circular cylindrical shells are derived. The functionally graded cylindrical shells with simply supported edges are reinforced by ring and stringer stiffeners system on internal and (or) external surface. The resulting equations in the case of compressive and pressive loads are solve directly, while in the cas...
  • 71.pdf.jpg
  • Article

  • Buckling Analysis of Functionally Graded Annular Spherical Shells and Segments Subjected to Mechanic Loads

    • Authors: Dao, Huy Bich; Nguyen, Thi Phuong (2013)

  • An analytical approach is presented to investigate the buckling of functionally graded annular spherical segments subjected to compressive load and radial pressure. Based on the classical thin shell theory, the governing equations of functionally graded annular spherical segments are derived. Approximate solutions are assumed to satisfy the simply supported boundary condition of segments and Galerkin method is applied to obtain closed-form relations of bifurcation type of buckling loads. Numerical results are given to evaluate effects of inhomogeneous and dimensional parameters to the buckling of structure.
  • 36.pdf.jpg
  • Article

  • Nonlinear Analysis on Flutter of FGM Plates Using Ilyushin Supersonic Aerodynamic Theory

    • Authors: Pham, Hong Cong; Nguyen, Dinh Duc; Dao, Huy Bich (2015)

  • This paper deals with an analysis on the supersonic flutter characteristics of Functionally Graded (FGM) plate under aerodynamic loads. Based upon the classical plate theory and the Ilyushin supersonic aerodynamic theory, the governing equations of FGM plates lying in the moving supersonic airflow are derived. The application of Galerkin method with an approximate two-terms Fourier expansion solution leads to a set of nonlinear auto-oscillation equations for determining the nonlinear flutter response and critical velocity. Numerical results are obtained by fourth-order Runge-Kutta method. The influences of the material properties, geometrical parameters and initial conditions on the s...
  • 26.pdf.jpg
  • Article

  • Nonlinear Analysis on Flutter of Functional Graded Cylindrical Panels on Elastic Foundations Using the Ilyushin Nonlinear Supersonic Aerodynamic Theory

    • Authors: Tran, Quoc Quan; Dao, Huy Bich; Nguyen, Dinh Duc (2015)

  • Based on classical shell theory with the geometrical nonlinearity in von Karman-Donell sense and the Ilyushin nonlinear supersonic aerodynamic theory, this paper successfully formulated the equations of motion of the functionally graded cylindrical panel on elastic foundations under impact of a moving supersonic airflow and found the critical velocity of supersonic airflow that make the panel unstable. This paper also used the Bubnov-Galerkin and Runge – Kutta methods to solve the system of nonlinear vibration differential equations and illustrated effects of initial dynamical conditions, shape and geometrical parameters, material constituents and elastic foundations on aerodynamic re...
  • 195.pdf.jpg
  • Article

  • On the lateral oscillation problem of beams subjected to axial load

    • Authors: Dao, Huy Bich; Nguyen, Dang Bich (2004)

  • This paper approaches the problem of lateral oscillation of beams subjected to axial load by means of seeking the exact solution of the linear Matheu equation with the periodic function h(t) having a determined form.