Global ETD Search
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Showing 1 to 7 of 7 for “"effective moduli"”.
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The effects of fluid pressure changes on fractured rock elastic moduli and surface deformation
Reservoir models use the elastic moduli of rock, both bulk and shear, to compute deformation. These moduli may change with pressure and fracture density, but this effect is usually left out of models. This work shows effective elastic moduli of fluid-filled fractured rock through a self consistent …
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Numerical Constitutive Models of Woven and Braided Textile Structural Composites
Equivalent, three-dimensional elastic moduli are determined from unit cell models of balanced plain weave, 2D braid, 2D triaxial braid and 4x4 twill textile composite materials consisting of interlaced or intertwined yarns. The yarn paths are modeled with undulation portions, in which one yarn …
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Wave scattering from cylindrical fluid inclusions in an elastic medium and determination of effective medium properties
… scattering approximation is used to derive effective moduli for multiple fluid-filled cylinders in an elastic medium. The theory assumes the acoustic wavelength in the medium is long compared to the radius of the cylindrical inclusion so that fluctuations in material properties are …
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Effective elastic properties of two -dimensional solids with inhomogeneities of irregular shapes
<p>This work investigates the effective elastic properties of two-dimensional solids with inhomogeneities of various shapes. We develop a special procedure to evaluate the contribution of irregularly shaped inhomogeneities to these properties. The method can also be used to investigate the stress …
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Effects of geometry on static and band gap properties of 3D printed metastructures
… to fulfill multiple functions. Extensive work on effective static properties of different architected materials have shown their ability to push the modulus-density design space, in terms of high effective moduli at low relative density. On the other hand, variations in geometry allow for these …
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Computational Modeling and Impact Analysis of Textile Composite Structutres
… To overcome these problems, this study presents effective mesh-generation schemes, homogenization modeling based on a repeating unit cell and sinusoidal functions, and also a cohesive element to study micro-crack shapes. This proposed research has two: 1) studying behavior of textile composites …
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Biomechanical characterization and computational modeling of the anterior eye
… and posterior sides of porcine irides. The effective moduli and viscoelastic parameters for all regions were calculated. Three-dimensional anatomically accurate models of iris indentation were generated in ABAQUS, based on histological data. An inverse method was developed to determine …