Open Access
ABSTRACT
M. Tsuda1, T. Asada1, N. Ohno1,2, T. Igari3
The International Conference on Computational & Experimental Engineering and Sciences, Vol.10, No.3, pp. 2-2, 2009, DOI:10.3970/icces.2009.010.097
Abstract In this study, homogenized elastic-viscoplastic behavior of plate-fin structures fabricated for compact heat exchangers is investigated. First, the homogenized behavior is numerically analyzed using a fully implicit mathematical homogenization scheme of periodic elastic-inelastic solids. A power-law creep equation is assumed to represent the viscoplasticity of base metals at high temperatures. The plate-fin structures are thus shown to exhibit significant anisotropy as well as compressibility in both the elastic and viscoplastic ranges of the homogenized behavior. Second, a non-linear rate-dependent macroscopic constitutive model is developed by utilizing the quadratic yield function proposed for anisotropic compressible plasticity. The resulting constitutive model is… More >
Open Access
ABSTRACT
Zone-Ching Lin1, Ming-Long Huang1
The International Conference on Computational & Experimental Engineering and Sciences, Vol.10, No.3, pp. 89-90, 2009, DOI:10.3970/icces.2009.010.089
Abstract The paper develops a two dimensional quasi-steady molecular staic model to simulate the vertical down press copper workpiece by down press the nanoscale depth of abrasive grains in different shapes. The research of the down pressing copper workpiece of abrasive grains in this paper uses the hexagonal close packed diamond abrasive grains to down press the perfect face-centered cubic copper. The paper's simulation of down pressing nanoscale depth model of abrasive grain by two dimensional quasi-steady molecular statics model is a step by step to down press copper workpiece by diamond abrasive grain. It is assumed that each atom of… More >
Open Access
ABSTRACT
P. Ruzicka1, P. Bendova1, S. Konvickova1
The International Conference on Computational & Experimental Engineering and Sciences, Vol.10, No.3, pp. 91-96, 2009, DOI:10.3970/icces.2009.010.091
Abstract The objective of the study was to prove magnetic resonance imaging as suitable instrument for exploring the nature and amplitude of displacements within the bony pelvis induced by asymmetrically altered pelvic floor muscle characteristics. Repeated MR imaging of 14 females was performed. Spatial coordinates of 23 pelvic landmarks were localized in each subject and registered by interactive and automatic procedures. Modalities of registration procedure were tested and compared by the precision of registration. The software tool was developed to perform registrations and data analyses including individual registration error evaluation. The automatic registration with vertebra L5 as reference has been found… More >
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