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Showing 1 to 20 of 778 for “"finite element model"”.
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Finite Element Model Updating for Rotary Machinery
… of this thesis was to develop a mathematical model that represents a rotary machine. Experimental data was used to define a finite element model (FEM). In order to obtain the experimental data, the rotary machine had to be balanced. An impact hammer test made it possible to obtain frequency …
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Finite element model of cardiac electrical conduction
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1994.
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Finite element model of thermoelastic damping in MEMS
… for thermoelastic dissipation in a beam model. The governing equations of thermo elasticity dictate that the amount of damping that a resonator undergoes is a function of both material properties as well as device geometry. Damping will become greatest at operating cycle times that are of …
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A Web-based finite element model for heat transfer
… problems. The numerical solver is based on the finite element method. The program is designed to work with both triangle and quadrilateral elements. In this thesis the development of the finite element method, using the Galerkin weighted residuals method, is reviewed and the technique applied to …
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OCTG Premium Threaded Connection 3D Parametric Finite Element Model
Full 360 degree 3D finite element models are the most complete representation of Oil Country Tubular Goods (OCTG) premium threaded connections. Full 3D models can represent helical threads and boundary conditions required to simulate make-up and service loading. A methodology is developed to create …
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Application of distributed measurements for finite element model verification
… a rigorous comparison between a distributed model and distributed measurements that was not possible previously. The purpose of this work is to obtain and compare experimental and analytical distributed measurements for a simple structure excited by a point force (from a shaker) and by a …
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Vibration-based finite element model updating and structural damage identification
… of this research are to develop a procedure for finite element model updating by using incomplete modal data identified from vibration measurements, to develop real time structural damage detecting method by directly using vibration measurements and then identify the damage at detailed location …
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A finite element model for dynamic analysis of mooring cables
Thesis. 1976. Ph.D. cn--Massachusetts Institute of Technology. Dept. of Ocean Engineering.
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Thermal-magnetic finite element model of a high frequency transformer
… either empirical or based on linear, uncoupled models. To better understand the relationship between heat transfer, magnetic flux density, material properties, and core geometry in a miniature, high-frequency transformer, a finite-element program has been developed to solve the coupled …
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Computation of a Damping Matrix for Finite Element Model Updating
… dominated by energy dissipation. The process of modeling damping matrices and experimental verification of those is challenging because damping can not be determined via static tests as can mass and stiffness. Furthermore, damping is more difficult to determine from dynamic measurements than …
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Development of a Computationally Efficient Full Human Body Finite Element Model
… safety mechanisms. Computer simulations using Finite Element Analysis (FEA) are becoming a more prominent tool in the study of motor vehicle crash safety. FEA models of the human body have the potential to greatly enhance the volume of biomechanically relevant data obtained from crash …
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Finite element model updating and damage detection using artificial boundary conditions
… conditions. Use of the ABCs in sensitivity-based model updating and damage detection in conjunction with baseline data provides improved error localization and results in a more accurate finite element model.
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A Fourier finite element model for unsaturated flow in porous media
… equation. The algorithms are based on a Fourier finite element type of formulation, which combines the efficiency of the Fourier series expansion as a refinement tool and the finite element method, where the spatial domain is divided into discrete elements and nodal points. A truncated Fourier …
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Finite element model of a tennis ball impact with a racket
<p>Previous authors have produced analytical models which accurately simulate tennis impacts. However, currently there are few published studies on the simulation of tennis impacts using finite-element (FE) technique. The purpose of this study was to produce accurate FE models of tennis impacts, …
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A coupled thermal-magnetic finite element model for high frequency transformers
… thermal and electromagnetic equations using the finite element method. A novel technique for modeling the reluctivity of the soft-ferrite core material permits a time-harmonic transformation of the electromagnetic equations. This eliminates the need to step through time while maintaining the …
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The development of finite element model for Malaysian Female Anthropometric Dummy
… for user safety. The development of dummy models starts from rigid body models to deformable models which is then adopted into finite element models for more accurate and detailed results in doing analysis. Using the numerical method (FEM) to evaluate crash test has increase the cost saving …
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A finite element model of grain boundary sliding for nanostructured metals
… behavior. In this work, we propose a continuum model describing the competing deformation mechanisms believed to determine the effective response of nanocrystalline materials. A phenomenological model considering grain boundary sliding and accommodation as uncoupled plastic dissipative …
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Finite Element Model of the Pediatric Hip Joint During the Barlow Maneuver
… the project is to use healthy and dysplastic hip Finite Element Models to predict the biomechanics of the Barlow maneuver. By modeling and studying the diagnostic maneuver, insight can be gained into the contact pressures magnitude and distribution over different infants’ acetabula and the infant …
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Three-dimensional finite element model for structural concrete subjected to impact loadings.
Abstract unavailable. Please refer to PDF.
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Development and Full Body Validation of a 5th Percentile Female Finite Element Model
… using a variety of tools, including human body finite element models (FEMs). Such models are often developed to represent a 50th percentile male occupant (M50). However, in order to address the effects of size and sex-related geometrical changes, there is interest in developing models of other …
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