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Showing 1 to 20 of 175 for “"finite element analyses"”.
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Finite element analyses of cellular cofferdams
… twice that which actually occurs. Recently, the finite element method has shown promise as a tool which can be used to help resolve some of the outstanding problems with cofferdam design. There are three primary objectives of this work: (1) enhance existing finite element program to allow for …
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Optimization of Pile Reinforced Slopes Using Finite Element Analyses
… thesis presents the results of two-dimensional finite element analyses with strength reduction method using the ABAQUS package to validate slope stability analyses of four cases, which are (1) homogeneous slope without foundation, (2) homogeneous slope with foundation, (3) non-homogeneous slope …
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Non-linear finite element analyses of the aortic heart valve
Finite element models of the aortic heart valve have been successfully used in the past to gain insight into the mechanics of the valve and to aid in understanding of valve failure. Moreover such models are indispensable tools for further developments in heart valve prosthetic design. In previous …
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Finite element analyses of a wave loaded pile : deterministic and probabilistic
… of the problem is developed using the ABAQUS finite element program. Of particular interest is the applicability of the , probabilistic finite element method (PFEM). It is important to appreciate that a mere deterministic dynamic analysis - however accurate analytically - may be of limited …
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Finite element analyses of pathological changes in the lumbar vertebral body
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1990.
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Finite element analyses of gravity earth retaining structures founded on soil
… equilibrium methods are utilized in these analyses, which are performed using assumed earth loads based on simplified earth pressure theories. Recent finite element studies performed on gravity retaining walls founded on rock revealed that the use of conventional methods may lead to overly …
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Stochastic finite element analyses of uncertain nonlinear plane trusses under random excitations
A method of stochastic finite element analysis is developed in this study to solve for the response statistics and reliability of nonlinear truss structures with uncertain system parameters under random excitations. Emphasis is on structural nonlinear behavior due to both large deflection and …
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Finite element analyses on cohesive soil behavior due to advanced shield tunneling
… thesis is directed towards developing a suitable finite element method (FEM) approach to the advanced shield problem. The FEM program developed includes the Prevost elasto-plastic soil model, allows for analysis of development and dissipation of excess pore pressure, large deformation, and …
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Biomechanical and Finite Element Analyses of Alternative Cements for use in Vertebral Kyphoplasty
… to PMMA via cadaveric experimentation and finite element modeling. Cadaveric experiments were carried out to investigate the failure loads of individual osteoporotic thoracolumbar vertebrae. Fractures were artificially created and specimens were restored with one of the cements of interest …
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Estimating settlements and capacities of piled foundations with non-linear finite element analyses
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1998.
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Linear and Nonlinear Finite Element Analyses of Anchorage Zones in Post-Tensioned Concrete Structures
Linear and nonlinear finite element analyses are used for the investigation of rectangular anchorage zones with the presence of a support reaction. The investigation is conducted based on four load configurations consisting of concentric, inclined concentric, eccentric, and inclined eccentric …
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Investigation of the performance of flexible pavement systems under moving loads using finite element analyses
… of this study is to conduct a three-dimensional finite element analysis to quantify and evaluate the effects of wander and aircraft wheel configurations on the mechanical response of the pavement layers. The flexible pavement system that is modeled in this study is comprised of a medium and low …
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Nonlinear Finite Element Analyses of the End Web Crippling Strength of W-Shape Steel Beams
… steel beams was investigated by means of the finite element technique. The commercial finite element package ANSYS 6.0 was used to model the steel beams. Material nonlinearities, large deformation effects and initial geometric imperfections were taken into account in the finite element models. …
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Finite element analyses of pile load tests performed in the Yorktown formation, Newport News, Virginia
The finite element method is used in determining the load-capacity and behavior of a single concrete pile modeled after full scale instrumented test piles which were employed in the Tidewater area of Virginia. Specifically, this report describes the subsurface conditions and full scale pile tests …
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Dominant singularity and finite element analyses of plane-strain stress fields in creeping alloys with sliding grain boun[d]aries
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1982.
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Experimental investigations and finite element analyses of interface heat partition in a friction brake system. New modelling paradigm for describing friction brake systems to support studies of interface temperature, contact pressure, heat flux distribution and heat partition ratio by experiment and FE simulation
… and proposing improvements in brake system Finite Element (FE) models in order to provide high quality descriptions of thermal behaviour during braking events. The work focuses on brake disc/pad models and the degree of rotational freedom allowed for the pad. Conventional models [10] allow …
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Stress concentration factors of stepped structures and shouldered shafts under combined loading
The purpose of this research is to investigate finite element analysis results of two- and three- dimensional models of stepped structures and shouldered shafts with varying fillets and varying size ratios. Combined loading conditions were placed on the models to observe how the loading conditions …
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