Home / Journals / CMES / Vol.65, No.3, 2010
Table of Content
  • Open Access

    ARTICLE

    A Dual-Reciprocity Boundary Element Simulation of Axisymmetric Dual-Phase-Lag Heat Conduction in Nonhomogeneous Media

    B.I. Yun1, W.T. Ang1,2
    CMES-Computer Modeling in Engineering & Sciences, Vol.65, No.3, pp. 217-244, 2010, DOI:10.3970/cmes.2010.065.217
    Abstract A dual-reciprocity boundary element method is proposed for simulating numerically axisymmetric dual-phase-lag heat conduction in nonhomogeneous thermally isotropic media. The properties of the media, such as thermal conductivity and specific heat, are assumed to vary continuously in space. To check its validity and assess its accuracy, the proposed method is first applied to solve some specific test problems with known solutions. It is then used to simulate the axisymmetric dual-phase-lag heat conduction in a particular nonhomogeneous medium subject to a concentrated surface heating. The effects of the dual phase lags and the spatial variations of the thermal properties of the… More >

  • Open Access

    ARTICLE

    Effective Length of Beam on Elastic Foundation Under a Moving Load

    Chen-Ming Kuo1, Cheng-Hao Huang1
    CMES-Computer Modeling in Engineering & Sciences, Vol.65, No.3, pp. 245-258, 2010, DOI:10.3970/cmes.2010.065.245
    Abstract Vibrations induced by high-velocity train passing through environmental sensitive area are important issues to railway authorities. Research has been granted to resolve the environmental impact generated from vehicle-track interaction to the neighbor buildings. Models were established to simulate the vehicle-track interaction system which is the source of vibrations. Among them, Euler beam with finite length on elastic foundation subjected to moving loads is most commonly used to simulate the continuous track on site. The reason of modeling infinite length track with finite length model is to make solving possible by numerical analysis. However, the accuracy of analysis depends on the… More >

  • Open Access

    ARTICLE

    Variable Kinematics and Advanced Variational Statements for Free Vibrations Analysis of Piezoelectric Plates and Shells

    E. Carrera, S. Brischetto1, M. Cinefra2
    CMES-Computer Modeling in Engineering & Sciences, Vol.65, No.3, pp. 259-342, 2010, DOI:10.3970/cmes.2010.065.259
    Abstract This paper investigates the problem of free vibrations of multilayered plates and shells embedding anisotropic and thickness polarized piezoelectric layers. Carrera's Unified Formulation (CUF) has been employed to implement a large variety of electro-mechanical plate/shell theories. So-called Equivalent Single Layer and Layer Wise variable descriptions are employed for mechanical and electrical variables;linear to fourth order expansions are used in the thickness direction z in terms of power of z or Legendre polynomials. Various forms are considered for the Principle of Virtual Displacements (PVD) and Reissner's Mixed Variational Theorem (RMVT) to derive consistent differential electro-mechanical governing equations. The effect of electro-mechanical… More >

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