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  • Open Access

    ARTICLE

    A Post-Processing Scheme to Evaluate Transverse Stresses for Composite Panels under Dynamic Loads

    K. Lee1, H. Park2, S.W. Lee3

    CMES-Computer Modeling in Engineering & Sciences, Vol.32, No.3, pp. 113-122, 2008, DOI:10.3970/cmes.2008.032.113

    Abstract A post-processing scheme is presented to accurately determine transverse shear and normal stresses in composite panels undergoing geometrically nonlinear deformation under dynamic loading conditions. Transverse stresses are assumed through thickness at a point of interest and are recovered via a one-dimensional finite element method. The finite element method is based on the least square functional of the error in the equilibrium equation along the thickness direction and utilizes the in-plane stresses and resultant transverse shear forces per unit length obtained by a shell element analysis. Numerical results demonstrate that, with minimal addition of computational efforts, More >

  • Open Access

    ARTICLE

    Meshless Method for Crack Analysis in Functionally Graded Materials with Enriched Radial Base Functions

    P.H. Wen1, M.H. Aliabadi2, Y.W. Liu3

    CMES-Computer Modeling in Engineering & Sciences, Vol.30, No.3, pp. 133-148, 2008, DOI:10.3970/cmes.2008.030.133

    Abstract Based on the variation of potential energy, the element-free Galerkin method (MFGM) has been investigated for structures with crack on the basis of radial base function interpolation. An enriched radial base function is introduced to capture the singularities of stress at the crack tips. The advantages of the finite element method are remained in this method and there is a significant improvement of accuracy, particularly for the crack problems of fracture mechanics. The applications of the element-free Galerkin method with enriched radial base function to two-dimensional fracture mechanics in functionally graded materials have been presented More >

  • Open Access

    ARTICLE

    Biodynamic Loading in Orthopaedic Tissue Engineering

    S. Williams1, G. Reilly2, A. Sittichokechaiwut2, D. A. Clarke2, T. Nickel1, L. Mejia1

    Molecular & Cellular Biomechanics, Vol.3, No.4, pp. 137-138, 2006, DOI:10.32604/mcb.2006.003.137

    Abstract This article has no abstract. More >

  • Open Access

    ARTICLE

    A Rate Dependent Constitutive Model for Glass-Fibre / Epoxy-Matrix Woven Fabrics

    S. Marguet1, P. Rozycki1, L. Gornet1

    CMC-Computers, Materials & Continua, Vol.4, No.3, pp. 119-136, 2006, DOI:10.3970/cmc.2006.004.119

    Abstract This paper deals with the modelling until rupture of composite structures made of glass-fibre / epoxy-resin woven fabrics submitted to dynamic loadings. The model is built at the mesoscale of the elementary ply. It takes into account the slightly nonlinear brittle behaviour of the fibres under tensile sollicitations, their nonlinear behaviour in compression as well as the strongly non linear and irreversible behaviour of the ply in shear. Strain rate effects are also introduced and special attention is paid to the objectivity of the model in the context of finite element calculation. Therefore the choice… More >

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