• A coupling successive approximation method for solving duffing equation and its applicationA coupling successive approximation method for solving duffing equation and its application

    Findings of the paper are summarized as follows: 1. An algorithm to solve the Duffing equation is proposed, in which a method to transform the initial equation to the resulting equation and a coupling successive approximation method (CSAM) to solve the resulting equation are presented. 2. Based on the proposed algorithm, the analytic approximate...

    pdf19 trang | Chia sẻ: huongthu9 | Ngày: 12/08/2021 | Lượt xem: 727 | Lượt tải: 0

  • Transient analysis of laminated composite plates using nurbs-Based isogeometric analysisTransient analysis of laminated composite plates using nurbs-Based isogeometric analysis

    composite plates is first studied. The displacement field is generally defined and is derived from CPT. The Newmark time-integration algorithm was chosen to approximate the ordinary differential equations in time. We have successfully extended an application of the NURBS-based isogeometric finite element approach to analyze dynamic response for ...

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  • Calculation of transonic flows around profiles with blunt and angled leading edgesCalculation of transonic flows around profiles with blunt and angled leading edges

    In fact, transonic flows are used for large civil aircraft and other flight objects. The implementation of computational methods and deep understandings of physical nature of the transonic flow are always needed [6, 7]. The above analysis for subsonic-transonic flow and supersonic-transonic flow allows drawing the following conclusions. It is c...

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  • Nonlinear post-Buckling of thin fgm annular spherical shells under mechanical loads and resting on elastic foundationsNonlinear post-Buckling of thin fgm annular spherical shells under mechanical loads and resting on elastic foundations

    Due to practical importance of FGM annular spherical shells and the lack of investigations on stability of these structures, the present paper aims to propose an analytical approach to study the problem of nonlinear buckling and postbuckling of FGM thin annular spherical shells on elastic foundations. Based on the classical thin shell theory, the ...

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  • A cell-Based smoothed discrete shear gap method (cs-fem-dsg3) for dynamic response of laminated composite plate subjected to blast loadingA cell-Based smoothed discrete shear gap method (cs-fem-dsg3) for dynamic response of laminated composite plate subjected to blast loading

    In this paper, the cell-based smoothed discrete shear gap method (CS-FEM-DSG3) is extended to investigate the dynamic response of laminated composite plate under the effect of blast loading modeled by some trigonometric time functions. Numerical results demonstrate that the proposed method can achieve accurate results by using only a relative co...

    pdf10 trang | Chia sẻ: huongthu9 | Ngày: 12/08/2021 | Lượt xem: 674 | Lượt tải: 0

  • On the convergence of a coupling successive approximation method for solving duffing equationOn the convergence of a coupling successive approximation method for solving duffing equation

    Findings of the paper are summarized as follows: 1. The convergence of the coupling successive approximation method (CSAM) is proved for Eq. (1) without using the assumption of small parameters. 2. Condition of convergence is obtained as follows where θ is denoted by (14). 3. The proposed algorithm is applied to some examples to verify the met...

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  • Dynamic response of three dimension tunnel on elastic foundation subjected to moving vehicle loadsDynamic response of three dimension tunnel on elastic foundation subjected to moving vehicle loads

    This paper presented an algorithm of element finite method established for dynamic analysis of tunnel and foundation in space model subjected to moving loads of vehicle. Numerical investigation has been carried out for an example with different parameters and showed effects of parameters of structure and load to the dynamic response of tunnel-fou...

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  • On modelling and control design for self-Balanced two-wheel vehicleOn modelling and control design for self-Balanced two-wheel vehicle

    In this study, deriving the differential equations of motion of self-balanced two-wheel vehicle and designing a controller to maintain vehicle motion are presented. The method of substructures has been exploited successfully in establishing equations of motion of the vehicle. Because the system has two degrees of freedom but only one actuator, a...

    pdf9 trang | Chia sẻ: huongthu9 | Ngày: 11/08/2021 | Lượt xem: 872 | Lượt tải: 0

  • Thermal buckling of imperfect functionally graded cylindrical shells according to wan-Donnell modelThermal buckling of imperfect functionally graded cylindrical shells according to wan-Donnell model

    A thermal buckling analysis of imperfect circular cylindrical shells of functionally graded material is considered. The material properties are assumed varying as a power form of thickness coordinate variable. The Donnell equilibrium and stability equations are considered and the Wan-Donnell model for initial geometrical imperfection is adopted. ...

    pdf10 trang | Chia sẻ: huongthu9 | Ngày: 11/08/2021 | Lượt xem: 631 | Lượt tải: 0

  • Slip-Shakedown analysis and the assumption of small coupling in frictional contactSlip-Shakedown analysis and the assumption of small coupling in frictional contact

    In the considered problem, the dependence of the yield limit on the amplitude of the loading is not classical. Our discussion shows that well-known general theorems of shakedown analysis and of limit analysis remain available and that static and kinematic approaches can be applied within some minor modifications. New expressions of the critical ...

    pdf9 trang | Chia sẻ: huongthu9 | Ngày: 11/08/2021 | Lượt xem: 686 | Lượt tải: 0