Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 8 of 8 for “"Mesh Dependency"”.
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Finite Element Analysis of and Multiscale Skeletal Tissue Mechanics Concerning a Single Dental Implant Site
… research, which are argued to be caused by mesh-dependency from common model idealizations in literature. A convergence test was then performed, which verified the mesh-dependency of results and challenged the reliability of some common model assumptions and methods of analysis in …
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Progressive Failure Analysis of Double-Notched Composite Laminates
… failure in notched composites. In addition, the mesh-dependency and the parametric studies of cohesive elements and MPDM scheme are all presented on the notched quasi-isotropic laminate. The results of the mesh-dependency show that the FE models need to be built with three-dimensional elements …
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Feasibility study of air catcher for natural ventilation application
… the buoyancy driven natural ventilation. Mesh dependency test has been done for three sizes of mesh and result was validated by comparing the numerical result with experimental result for NACA2415 airfoil. Sixty cases were studied by considering five types of airfoils air catchers, three …
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Broadband Noise Prediction of an Axial Compressor Operating at Low Reynolds Number
… geometry for aeroacoustic source evaluation. A mesh dependency study was conducted in order to assess the level of refinement needed for convergence of turbulent statistics. It was found that although a fine resolution was needed for convergence of velocity and pressure spectra describing …
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A scalable computational approach for modeling dynamic fracture of brittle solids in three dimensions
… to nucleate and propagate in the finite element mesh, governed by a cohesive tractionseparation law (TSL). This aspect of the method is similar to existing "extrinsic" cohesive element methods which introduce new fracture surfaces in the mesh through the adaptive insertion of cohesive elements …
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Modellazione numerica della nascita e dello sviluppo di interfacce mediante il metodo delle discontinuità forti
… al variare della discretizzazione adottata (mesh-dependency) a causa del comportamento softening del materiale. Al fine di superare tali limiti sono stati proposti diversi approcci rintracciabili in letteratura, quali i modelli con continuo arricchito, i modelli con discontinuità deboli, …
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Failure processes in soft and quasi-brittle materials with nonhomogeneous microstructures
… we present a series of methods for reducing mesh dependency in two-dimensional dynamic cohesive fracture simulations of quasi-brittle materials. In this setting, cracks are only permitted to propagate along element facets, thus a poorly designed discretization of the problem domain can …
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Constitutive Modelling of Shear Localisation in Saturated Dilative Sand
… movements at grain scale without extreme mesh refinement. This thesis aims to evaluate the capabilities of the finite element method and existing material models to identify the onset and propagation of localisation in dilatant hardening materials. Then constitutive relations are upgraded …