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  • Open AccessOpen Access

    ABSTRACT

    Fracture behavior of plain concrete beams -- experimental verification of one parameter model

    B.K.Raghu Prasad1, Rabindra Kumar Saha1, A.R.Gopalakrishnan1
    The International Conference on Computational & Experimental Engineering and Sciences, Vol.14, No.3, pp. 65-84, 2010, DOI:10.3970/icces.2010.014.065
    Abstract Several different models have been proposed to characterize mode-I crack propagation in concrete. The fictitious crack model proposed by Hillerborg et al. and the blunt crack band theory developed by Bazant & Oh are particularly well suited for a finite element analysis. The two-parameter fracture model proposed by Jenq & Shah is found to be applicable only for beams with s/w=4, where s=span & w=depth of the beam. The general applicability of the model for other testing configurations is not published. In the present study an experimental verification of a one-parameter model based on fundamental… More >

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    1188

  • Open AccessOpen Access

    ABSTRACT

    A comparison of various basis functions to linear stability of circular jet using MLPG method

    M.L. Xie1
    The International Conference on Computational & Experimental Engineering and Sciences, Vol.14, No.3, pp. 85-90, 2010, DOI:10.3970/icces.2010.014.085
    Abstract Various basis function based on Fourier-Chebyshev Petrov-Galerkin spectral method is described for computation of temporal linear stability in a circular jet. Basis functions presented here are exponentially mapped Chebyshev functions. There is a linear dependence between the components of the vector field according to the perturbation continuum equation. Therefore, there are only two degrees of freedom. According to the principle of permutation and combination, the basis function has three basic forms, i.e., the radial, azimuthal or axial component is free. The results show that three eigenvalues for various cases are consistent, but the basis function More >

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    721

  • Open AccessOpen Access

    ABSTRACT

    The boundary layer phenomenon in bending of thick annular sector plates

    S. R. Atashipour1, A. R. Saidi2
    The International Conference on Computational & Experimental Engineering and Sciences, Vol.14, No.3, pp. 91-96, 2010, DOI:10.3970/icces.2010.014.091
    Abstract In this article, the bending equations of thick annular sector plates are derived based on the third-order shear deformation theory (TSDT). Using a function, called boundary layer function, the coupled system of equations is converted into two decoupled equations and solved analytically. It is shown that the value of the boundary layer function for TSDT is higher than that of the Mindlin theory. Thus, variations of stress components in the edge zone of the plate are more significant. It is seen that there exist no boundary layer, a weak boundary layer, and a strong boundary More >

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    749

  • Open AccessOpen Access

    ABSTRACT

    Modeling of the bolted joint behavior variability \\ with the Lack of Knowledge theory

    F. Gant1, L. Champaney1, Ph. Rouch1
    The International Conference on Computational & Experimental Engineering and Sciences, Vol.14, No.3, pp. 97-98, 2010, DOI:10.3970/icces.2010.014.097
    Abstract Widely used in aeronautics, bolted and riveted joints are subject to high and various loads during flight. The design of such elements is quite a challenge because of their large number and uncertain nonlinear behavior. Indeed, the control of joint properties such as bolt pretension, bolt hole clearance, and friction during manufacturing processes is an issue.
    Engineering design uses a factor of safety (FoS) to quantify uncertainties, which often leads to an oversized structure. Here, the aim is to model uncertainty effects on quantities of interest in order to redefine a more accurate FoS that could… More >

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