Home / Journals / ICCES / Vol.15, No.4, 2010
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  • Open Access

    ABSTRACT

    Surface reconstrucion by means of AI

    T. Podoba1, L. Tomsu1, K. Vlcek1, M. Heczko
    The International Conference on Computational & Experimental Engineering and Sciences, Vol.15, No.4, pp. 111-122, 2010, DOI:10.3970/icces.2010.015.111
    Abstract Surface reconstruction based on chaotic systems or exactly given point clouds is very difficult area. Current algorithms such as Marching Cube or Voronoi Filtering do not use methods based on artificial intelligence. In this paper, we investigate solution of polygonal surface construction based on AI. The main purpose is to generate complex polygonal mesh structures based on strange attractors with fractal structure. Attractors have to be created as 4D objects using quaternion algebra or using methods of AI. Polygonal mesh can have different numbers of polygons because of iterative application of this system. Our main goal is to develop new… More >

  • Open Access

    ABSTRACT

    CFD case study to optimize surgical adjustment of ventricular assist device implantation to minimize stroke risk part I: steady-state CFD modeling

    Andres F. Osorio1, Ruben Osorio1, Reginald Tran1, Andres Ceballos1, Alain Kassab1, Eduardo Divo2, I. Ricardo Argueta-Morales3, William M. DeCampli3,4
    The International Conference on Computational & Experimental Engineering and Sciences, Vol.15, No.4, pp. 123-124, 2010, DOI:10.3970/icces.2010.015.123
    Abstract Presently, mechanical support is the most promising alternative to cardiac transplantation. Ventricular Assist Devices (VADs) were originally used to provide mechanical circulatory support in patients waiting planned heart transplantation (“bridge-to-transplantation” therapy). The success of short-term bridge devices led to clinical trials evaluating the clinical suitability of long-term support (“destination” therapy) with left ventricular assist devices (LVADs). The first larger-scale, randomized trial that tested long-term support with a LVAD reported a 44% reduction in the risk of stroke or death in patients with a LVAD. In spite of the success of LVADs as bridge-to-transplantation and long-term support. Patients carrying these devices… More >

  • Open Access

    ABSTRACT

    CFD case study to optimize surgical adjustment of ventricular assist device implantation to minimize stroke risk part II: transient vascular resistance model

    Eduardo Divo1, Alain Kassab2, Greisa Mendez3, I. RicardoArgueta-Morales4, William M. DeCampli4,5
    The International Conference on Computational & Experimental Engineering and Sciences, Vol.15, No.4, pp. 125-128, 2010, DOI:10.3970/icces.2010.015.125
    Abstract In order to properly account for the unsteady nature of the flow field generated by the cardiac ejection in an Aortic Arch with an implanted Left Ventricular Assist Device (LVAD) Computational Fluid Dynamics (CFD) model, a closed-loop external vascular model is necessary. Such external model is coupled to the CFD model to dictate the flow field boundary conditions at the outlets of the CFD model and thus, control the flow splits through the different branches that stem out of the aortic arch throughout the cardiac cycle. More >

  • Open Access

    ABSTRACT

    Magneto-electric laminates free vibration characterization by dual reciprocity BEM

    G. Davì1, A. Milazzo1, C. Orlando1
    The International Conference on Computational & Experimental Engineering and Sciences, Vol.15, No.4, pp. 129-136, 2010, DOI:10.3970/icces.2010.015.129
    Abstract A dual reciprocity based boundary element approach for the analysis of magneto-electric laminates free vibration behavior is presented. The problem is formulated employing generalized displacements, that is displacements and electric and magnetic scalar potentials, and the corresponding generalized tractions. The generalized boundary integral representation is deduced by extending the reciprocity theorem to magneto-electro-elasticity problem and the multidomain boundary element technique is used to model multilayer structures. The magneto-electro-elastic static fundamental solutions are used jointly with the dual reciprocity method to transform the inertia domain integral into a boundary integral. Numerical results are presented focusing on the effects of the electro-magnetic… More >

  • Open Access

    ABSTRACT

    Free vibrations of magnetoelectric bimorph beam devices by third order shear deformation theory

    A. Alaimo1, A. Milazzo1, C. Orlando1
    The International Conference on Computational & Experimental Engineering and Sciences, Vol.15, No.4, pp. 137-144, 2010, DOI:10.3970/icces.2010.015.137
    Abstract The axial and flexural natural frequencies of magneto-electro-elastic bimorph beam devices are analyzed in the framework of the third-order shear deformation theory (TSDT). Although the assumption of parabolic transverse shear strain distribution along the thickness leads to higher order stress resultants the use of the TSDT allows to avoid the need for shear correction factor. Moreover, since the electric and magnetic potentials strictly depend on the shear strains, a more accurate modeling of the magneto-electric coupling can be achieved by expanding the kinematical model up to the cubic term. The natural frequencies for different mechanical boundary conditions are computed by… More >

  • Open Access

    ABSTRACT

    The energy localization by the rupture propagation

    I.A. Miklashevich1
    The International Conference on Computational & Experimental Engineering and Sciences, Vol.15, No.4, pp. 145-152, 2010, DOI:10.3970/icces.2010.015.145
    Abstract The simple analytical model for the energy flux by the earthquake is proposed. The energy flux can be evaluated through the Umov-Pointing vector by the rupture propagation in media. Discontinuity of vector components is found. This discontinuity cause the change of an energy flow direction and localization of the energy field. More >

  • Open Access

    ABSTRACT

    Anisotropic elastic properties of Ni-Mn-In magnetic shape memory alloy

    K. Williams1, T. Cagin1,2
    The International Conference on Computational & Experimental Engineering and Sciences, Vol.15, No.4, pp. 153-160, 2010, DOI:10.3970/icces.2010.015.153
    Abstract Designing magnetic shape memory materials with practicable engineering applications requires a thorough understanding of their electronic, magnetic, and mechanical properties. Experimental and computational studies on such materials provide differing perspectives on the same problems, with theoretical approaches offering fundamental insight into complex experimental phenomena. Many recent computational approaches have focused on first-principles calculations, all of which have been successful in reproducing ground-state structures and properties such as lattice parameters, magnetic moments, electronic density of states, and phonon dispersion curves. With all of these successes, however, such methods fail to include the effects of finite temperatures, effects which are critical in… More >

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