Journals / ICCES / Vol.7, No.3
Table of Content

  • ABSTRACT

    Normal Modes of Rotating Timoshenko Beams

    T.-L. Zhu1
    The International Conference on Computational & Experimental Engineering and Sciences, Vol.7, No.3, pp. 107-112, 2008, DOI:10.3970/icces.2008.007.107
    Abstract A modeling method for flapwise and chordwise bending vibration analysis for rotating Timoshenko beams is introduced. For the modeling method shear and the rotary inertia effects are correctly judged based on \textit {Timoshenko beam theory}. Equations of motion of continuous models are derived from a modeling method which employs hybrid deformation variables. The equations thus derived are transmitted into dimensionless forms. The effects of dimensionless parameters on the modal characteristics of the Timoshenko beams are successfully examined through numerical study. In particular, eigenvalue loci veering phenomena and integrated mode shape critical deviations are contemplated and examined in this work. More >

  • ABSTRACT

    Aerodynamic Analysis of Helicopter Rotor using a Time-Domain Panel Method

    Seawook Lee1, Leesang Cho2, Jin-Soo Cho3
    The International Conference on Computational & Experimental Engineering and Sciences, Vol.7, No.3, pp. 113-122, 2008, DOI:10.3970/icces.2008.007.113
    Abstract Computational methods based on the solution of the flow model are widely used for the analysis of low-speed, inviscid, attached-flow problems. Most of such methods are based on the implementation of the internal Dirichlet boundary condition. In this paper, the time-domain panel method uses the piecewise constant source and doublet singularities. The present method utilizes the time-stepping loop to simulate the unsteady motion of the rotary wing blade for the KHP. The wake geometry is calculated as part of the solution with no special treatment. To validate the results of aerodynamic characteristics, the typical blade was chosen such as, Caradonna-Tung… More >

  • ABSTRACT

    Tire Standing Wave Simulation by 3-D Explicit Finite Element Method

    Jung-Chul An1, Jin-Rae Cho1
    The International Conference on Computational & Experimental Engineering and Sciences, Vol.7, No.3, pp. 123-128, 2008, DOI:10.3970/icces.2008.007.123
    Abstract Tire standing wave is one of the crucial factors that may lead to unexpected tire structural failure because the total strain energy of the tire dramatically increases when it occurs. However, its analytical analysis has been limited owing not only to the complicated tire structure and material composition, but also to the problem nonlinearity. In this paper, its characteristics are numerically investigated with the help of the transient dynamic rolling analysis of the 3-D patterned tire model. More >

  • ABSTRACT

    Numerical Investigation on Resonant Sloshing Characteristics of 2-D Baffled Liquid Container

    Jong-Kook Cha1, Jin-Rae Cho1
    The International Conference on Computational & Experimental Engineering and Sciences, Vol.7, No.3, pp. 129-134, 2008, DOI:10.3970/icces.2008.007.129
    Abstract Sloshing flow is formulated based on the linearized potential flow theory, while an artificial damping term is employed into the kinematic free-surface condition to reflect the eminent dissipation effect in resonant sloshing. Through the numerical analysis of sloshing frequency response with respect to the number, location and opening width of baffle, the sloshing damping characteristics by baffle are parametrically investigated. More >

  • ABSTRACT

    On the Validity of the Fracture Mechanics Approach to Hydrogen Assisted Cracking

    J. Toribio1, V. Kharin2
    The International Conference on Computational & Experimental Engineering and Sciences, Vol.7, No.3, pp. 135-140, 2008, DOI:10.3970/icces.2008.007.135
    Abstract This paper deals with the meaning and significance of the fracture mechanics approach to hydrogen assisted cracking, analyzing the question of K-dominance not only over the purely mechanical aspects, but also over the environmental (physicochemical) events. Two key factors able to violate the uniqueness of the crack growth kinetics curve v = v(K) are discussed: the role of far field (the stress-strain field which is not K-dominated) and the effect of the history of hydrogenation and crack growth. The far field is shown to have a minor effect on near-tip hydrogen diffusion, and thus it can only widen the scatter… More >

  • ABSTRACT

    A Self-Acting Radial Bogie with Independently Rotating Wheels

    CHI, Maoru1, ZHANG, Weihua1 JIANG, Yiping1 DAI, Huanyun1
    The International Conference on Computational & Experimental Engineering and Sciences, Vol.7, No.3, pp. 141-145, 2008, DOI:10.3970/icces.2008.007.141
    Abstract This article has no abstract. More >

  • ABSTRACT

    The Descending Aortic Aneurysm under Vascular Structure having Three-layered using FSI

    O. Ohta1, F. Gao1, T. Matsuzawa2
    The International Conference on Computational & Experimental Engineering and Sciences, Vol.7, No.3, pp. 146-150, 2008, DOI:10.3970/icces.2008.007.146
    Abstract The aortic disease is 2nd place of the cause of death. If the thoracic part and the dissociation are matched, the aortic aneurysm exceeds 60 percent. The aneurysm decided based on the maximum diameter of the aneurysm from the image of which it takes a picture with CT or MRI etc. as such a diagnostic indicator. The appearance of disease, the development, and the rupture of the arterial hemangioma are thought that the hemodynamics such as intravasculars and vessel walls plays an important role [1,2]. Then, we simulated the aneurysm of descending aorta in consideration of the vessel wall of… More >

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