Home / Journals / CMES / Vol.95, No.1, 2013
Table of Content
  • Open Access

    ARTICLE

    Application of a Hybrid Mesh-free Method Based on Generalized Finite Difference (GFD) Method for Natural Frequency Analysis of Functionally Graded Nanocomposite Cylinders Reinforced by Carbon Nanotubes

    Seyed Mahmoud Hosseini 1
    CMES-Computer Modeling in Engineering & Sciences, Vol.95, No.1, pp. 1-29, 2013, DOI:10.3970/cmes.2013.095.001
    Abstract In this article, the effects of carbon nanotubes distributions on natural frequency are studied for a functionally graded nanocomposite thick hollow cylinder reinforced by single-walled carbon nanotubes using a hybrid mesh-free method. The FG nanocomposite cylinder is excited by a shock loading, which is applied on the inner surface of cylinder. The first natural frequency is obtained for various nonlinear grading patterns of distributions of the aligned carbon nanotubes. The effects of various nonlinear grading patterns on natural frequency are obtained and discussed in details. The presented hybrid mesh-free method is based on the generalized finite difference (GFD) method for… More >

  • Open Access

    ARTICLE

    Creep of Concrete Core and Time-Dependent Non-Linear Behaviour and Buckling of Shallow Concrete-Filled Steel Tubular Arches

    K. Luo1, Y. L. Pi1, W. Gao1, M. A. Bradford1
    CMES-Computer Modeling in Engineering & Sciences, Vol.95, No.1, pp. 31-58, 2013, DOI:10.3970/cmes.2013.095.031
    Abstract This paper presents a theoretical analysis for the time-dependent nonlinear behaviour and buckling of shallow concrete-filled steel tubular (CFST) arches under a sustained central concentrated load. The virtual work method is used to establish the differential equations of equilibrium for the time-dependent behaviour and buckling analyses of shallow CFST arches, and the age-adjusted effective modulus method is adopted to model the creep behaviour of the concrete core. Analytical solutions of time-dependent displacements and internal forces of shallow CFST arches are derived. It has been found that under a sustained central concentrated load, the deformations and bending moments in a shallow… More >

  • Open Access

    ARTICLE

    Modeling and Simulation of Non-Newtonian Fluid Mold Filling Process with Phase Change

    F. Wang1, J.L. Li1, B.X. Yang1, N.A. Hill2
    CMES-Computer Modeling in Engineering & Sciences, Vol.95, No.1, pp. 59-85, 2013, DOI:10.3970/cmes.2013.095.059
    Abstract A gas-liquid two-phase model for the simulation of a power-law fluid mold filling process with the consideration of phase change is proposed, in which the governing equations for the melt and air in the cavity, including the mass conservation, momentum conservation and energy conservation equations, are unified into one system of equation. A revised Enthalpy method, which can be used for both the melt and air in the mold cavity, is proposed to describe the phase change during the mold filling. Finite volume method on non-staggered grid is used to solve the system. The level set method is used to… More >

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