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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 20 of 1476 for “"finite-element method"”.
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Hybrid stress finite element method
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1986.
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The Quantized Velocity Finite Element Method
… solved with the development of a new and unique finite element formulation. Out of this framework, the 7D phasetime element has been born. To provide optimal stability, a new quantization procedure is established based on the principles of quantum theory. The entirety of this framework has been …
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Finite Element Method Modeling Of Advanced Electronic Devices
In this dissertation, we use finite element method together with other numerical techniques to study advanced electron devices. We study the radiation properties in electron waveguide structure with multi-step discontinuities and soft wall lateral confinement. Radiation mechanism and conditions are …
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Trace finite element method for material surface flows
… dissertation studies a geometrically unfitted finite element method (FEM), known as trace FEM, for the numerical solution of the Navier-Stokes problem posed on a closed smooth material surface. The key result proved is an inf-sup stability of the discrete formulation based on standard …
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Electromagnetic field solutions via the finite element method
This thesis examines the application of the finite element method to the solution of two important equations which govern electromagnetic fields, namely, the Poisson equation and the Helmholtz equation. These equations. together with appropriate boundary conditions, describe boundary value and …
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Rapid Drawdown Analysis using the Finite Element Method
… RDD analysis is a multi-stage undrained strength method based on limit equilibrium. The primary objective of this research was to develop a new method for rapid drawdown based on the finite element method. The new method estimates undrained strengths based on effective consolidation stresses from …
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Performance Of Interface Elements In The Finite Element Method
… is to assess the performance of interface elements in the finite element method. Interface elements are implemented in the finite element codes such as MSC.NASTRAN, which is used in this study. Interface elements in MSC.NASTRAN provide a tool to transition between a shell-meshed region to …
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ANALYSIS OF MACHINING PROCESS USING THE FINITE ELEMENT METHOD
… machining process is modelled using the finite element method. Starting with fundamental work material properties and cutting conditions, the distribution of flow stress within the chip and workpiece is computed. Plastic and elastic tool-chip friction are accounted for. The distributions …
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An efficient finite element method for embedded interface problems
… focus on developing a computationally efficient finite element method for interface problems. Finite element methods are severely constrained in their ability to resolve interfaces. Many of these limitations stem from their inability in independently representing interface geometry from the …
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A finite element method for the fully-coupled magnetohydrodynamics
This thesis presents a finite element method for the solution of three-dimensional magnetohydrodynamic flows. The physics of such flows is governed by the Navier-Stokes equations, which are extended to account for the Lorentz forces, and by Maxwell equations from which the magnetic induction …
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Numerical analysis of homogenization using random finite element method
… the geomaterial had been homogeneous. A random finite element method (RFEM) has been developed involving an ideal block of material leading to direct evaluation of the effective properties. The approach involves a combination of finite element analysis, random field theory and Monte-Carlo …
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Advanced Time-Domain Finite-Element Method for Electromagnetic Analysis
Time-domain finite-element method (TDFEM) is studied for electromagnetic analysis. Solutions to a series of open problems that impede the popularity of the TDFEM are presented. These problems include the development of accurate and efficient absorbing boundary conditions for the mesh truncation of …
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Inelastic Analysis of Slopes by the Finite Element Method
Made available in DSpace on 2014-12-08T23:57:01Z (GMT). No. of bitstreams: 1 6812126.pdf: 6851263 bytes, checksum: 321a1f305d6f4bf11feb388637c3c222 (MD5) Previous issue date: 1968
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Analysis of soil penetrometer using Eulerian finite element method
This thesis investigates the use of an Eulerian Finite Element (EFE) method for modeling penetration in soils. The formulation decouples material and nodal points displacements such that soil flows through a fixed finite element mesh. This approach eliminates problems of mesh distortion associated …
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The finite element method applied to neutron diffusion problems.
Massachusetts Institute of Technology. Dept. of Nuclear Engineering. Thesis. 1973. Nucl.E.
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A multiscale finite element method for fluid structure interaction problem.
A multiscale finite element method for fluid structure interaction problem.
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Prediction of machined parts distortion by the finite element method
… and produces considerable material wastage. The finite element method has been used to develop a methodology to model theactual machining process that produced the aircraft component. The finite element model that has been developed so far was able to demonstrate the effects ofredistribution of …
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Development of a finite element method for light activated polymers
… and engineering software, robust numerical methods must be developed in order to implement sound and accurate simulations. The photo-mechanical theory is summarized and some constitutive laws that govern LASMPS are described. Implementation of the multiphysics governing equations takes the …
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