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 20 of 89 for “"3D Finite Element"”.
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Simulation of anterior cruciate ligament injury and reconstruction using a 3D finite element knee joint model
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2002.
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An Investigation of Humeral Stress Fractures in Racing Thoroughbreds Using a 3D Finite Element Model in Conjunction with a Bone Remodeling Algorithm
… humerus was simulated during training using a 3D finite element model in conjunction with a bone remodeling algorithm. Nine muscle forces and two contact forces were applied to the 3-dimensional finite element model, which contains four separate load cases representing fore-stance, mid-stance, …
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Characterisation and modelling of loudspeaker cone resonance
… is extensively determined by creating 2D and 3D finite element models of a 6½-inch polypropylene-cone loudspeaker. Techniques for adjusting the resonant characteristics of loudspeaker cones by varying the material properties and thickness profile of the cone are explored and summarised. The …
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A finite element study of the mechanics of micro-groove machining of 4340 steel
… purpose of process improvements. Therefore, a 3D Finite Element (FE) model was developed to study the microgroove cutting process. However, the frictional heat has not been considered in the previous FE models and could have big impact on predictions of the side burr height, chip thickness, …
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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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Effect of cutting tool microgeometry when milling hardened steels, a finite element simulation and surface integrity analysis
This research work presents a 3D finite element model for the milling of hardened steels. The model was developed using ABAQUS/Explicit software and the Lagrangian approach was utilized. Experimental milling tests were performed to validate the numerically generated cutting forces and chip …
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Finite element analysis of cell subjected to compressive loading
A 3D finite element model was built to study the mechanical response of the cell to load. The model included major structural components of a cell like cytoskeletal elements, cell membrane and the presence of internal fluid pressure. The cell was considered as a pressurized, fluid filled bag where …
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Stress concentration around dowel bars in jointed rigid concrete pavements
… dowel bars were identified through detailed 3D Finite Element (3DFE) modeling of dowel jointed rigid pavement structures. Both straight and skewed joints were modeled using extremely fine meshing that allows accurate modeling of the friction and separation at dowel concrete interfaces. The …
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INFERRED RHEOLOGY AND UPPER MANTLE CONDITIONS OF WESTERN NEVADA AND SOUTHERN CALIFORNIA-NORTHWEST MEXICO
… of the lithosphere and asthenosphere using 3D finite element models. When we combine our inferred viscosity structure with calculations of conductive geothermal gradients and models of mantle melting, we can infer environmental conditions of the upper mantle like water content, mineralogy, …
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Experimental database, analysis and design of noncompact and slender concrete-filled steel tube (CFT) members
… and slender CFT members is compiled. Detailed 3D finite element method (FEM) models are developed for noncompact and slender CFT members, and benchmarked using experimental results. The AISC 360-10 design provisions for noncompact and slender CFT members are then evaluated by both the …
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Numerical analysis of TSV/micro-bump deformation due to chip misalignment and thermal processing in 3D IC packages
Three-dimensional (3D) stacking of integrated circuits (ICs) is an enabling technology in the advancement of the microelectronics industry. 3D stacking enables increased device density per volume and improved electrical performance through short vertical interconnect paths. Mechanical reliability …
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APPLICATION OF MULTI-HAZARD SEISMIC-BLAST DETAILING FOR HIGHWAY BRIDGES
… numerical simulations of a high-precision finite element model of a typical highway bridge in New York. Seismic-detailing for blast loading on bridges has been investigated to study the correlations between seismic design for blast load effects. High-precision 3D Finite Element models of …
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Evaluating the capabilities of some constitutive models in reproducing the experimental behaviour of stiff clay subjected to tunnelling stress paths
… stress paths have been determined from 2D and 3D finite element analysis using PLAXIS. Reconstituted Speswhite Kaolin clay specimens have been prepared from slurry, their properties investigated in detail, and tested using state-of-the-art stress path equipment and on-sample instrumentation. …
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Numerical simulation of ground movements and structural forces in lining for Earth Pressure Balance (EPB) tunneling in clay
This thesis describes the development of a 3D finite element model for representing mechanized tunnel construction using an Earth Pressure Balance (EPB) machine in clay. The model uses the commercial FE code, Plaxis 3D, to represent the face pressure, conical shield, grouting process and activation …
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Advanced Undersepage Analyses for Levees
… analysis procedures besides Blanket Theory. Finite element analysis is one such method that has more recently become the method of choice for general seepage analyses in geotechnical engineering. The focus of this research is mainly on underseepage analyses of levees in the lower Mississippi …
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Integration of Physically-based and Data-driven Approaches for Thermal Field Prediction in Additive Manufacturing
… framework consists of (i) thermal modeling using 3D finite element analysis (FEA), (ii) surrogate modeling using functional Gaussian process, and (iii) Bayesian calibration using the thermal imaging data. Based on heat transfer laws, I first investigate the transient thermal behavior during AM …
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Numerical modelling of the Oldroyd-B fluid
The purpose of this thesis is to develop a 3D finite element model of the Oldroyd-B fluid for use in a complex geometry. The model is developed in deal.ii, which is a C++ finite element library. In addition to the standard finite element approach for the momentum equation, the discontinuous …
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Discrete Damage Mechanics Applied To Transverse Matrix Cracking
… stresses. The model was latter validated using 3D finite element analysis (FEA) in a repetitive unit volume for a wide interval of crack densities and for several laminates, and the difference was found to be within 3%. The FEA, the model and classical laminate theory all converged to the same …
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Design of a High Specific Power Electric Machine for Turboelectric Propulsion
… Based on these findings and supported by 2D and 3D finite element analysis, a 19.7 kW/kg, megawatt-class, air-cooled tooth-and-slot Halbach array electrical machine demonstrator is conceived. A detailed design study together with risk mitigation experiments of key components are carried out, …
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