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Theses/Dissertations

Computer-Aided Engineering and Design

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Full-Text Articles in Engineering

Explicit Finite Element Modeling Of Knee Mechanics During Simulated Dynamic Activities, Mark A. Baldwin Jan 2009

Explicit Finite Element Modeling Of Knee Mechanics During Simulated Dynamic Activities, Mark A. Baldwin

Electronic Theses and Dissertations

The natural knee is one of the most commonly injured joints in the body due to relatively high loads and motions that can lead to debilitating degenerative diseases such as osteoarthritis. Total knee arthroplasty is a clinically successful method for eliminating pain in the osteoarthritic knee, but is subject to complications that can affect patient satisfaction and long-term implant performance. The work presented in this dissertation is a demonstration of how anatomic three-dimensional (3D) computational knee models can be an effective alternative for investigating knee mechanics when compared to the cost and time prohibitive nature of in-vivo and in-vitro methods. …

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Development And Evaluation Of A Simulation System Based Upon Standard Pedestrian Thoroughfare Methodologies, Charles O. Pringle Jun 2007

Development And Evaluation Of A Simulation System Based Upon Standard Pedestrian Thoroughfare Methodologies, Charles O. Pringle

All Master's Theses

This study was undertaken to determine whether existing simulation and modeling systems could be used to analyze and model pedestrian traffic flows. The study incorporates the Highway Capacity Manual 2000 (HCM) (Transportation Research Board, National Research Council [TRB], 2000a) methodologies into a ProModel simulation and then compares and contrasts the results of the HCM calculations with the ProModel simulation.

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Atomic Force Microscope Imaging Of Dna And Multi Walled Carbon Nanotubes, Jacob Hohnbaum May 2007

Atomic Force Microscope Imaging Of Dna And Multi Walled Carbon Nanotubes, Jacob Hohnbaum

Mechanical Engineering Undergraduate Honors Theses

The Micro and Nano System Laboratory at the University of Arkansas currently is equipped with an Atomic Force Microscope (AFM). This device can be used to measure objects with resolution on the nanometer scale, but there are a number of technical difficulties in performing scans of carbon nanotubes and DNA. The goal of this research is to successfully perform scans on both carbon nanotubes and DNA and to also establish laboratory processing protocols to re-perform such scans in the future. Previous works performed by other researchers in the laboratory provided basic protocols with which to begin the present research. These …

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Perceived Importance Of National Occupational Cadd Skill Standards Among Faculty Of Nait Accredited Institutions, Ronald Shava Jan 2005

Perceived Importance Of National Occupational Cadd Skill Standards Among Faculty Of Nait Accredited Institutions, Ronald Shava

Dissertations and Theses @ UNI

This study presents a descriptive survey that examined the importance and relevance of National Occupational CARD Skills based on the perceptions of faculty teaching at National Association of Industrial Technology (NAIT) accredited institutions. The major goal of the study was to determine what National Occupational CADD Skill Standards are relevant and important to faculty teaching CARD courses. The study was also designed to determine ratings of the perceived importance and relevance of National Occupational CADD Skill Standards by faculty teaching CADD courses at NAIT accredited institutions based on their area of specialization, professional ranking, and teaching experience. This study provided …

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Virtual Reality Modelling Of A Cnc Machine, Damian O'Sullivan Jan 1998

Virtual Reality Modelling Of A Cnc Machine, Damian O'Sullivan

Theses

The increasing importance of training and upgrading skills has led to the use of new interactive technologies in the development of more effective training tools. Previous techniques for training Computer Numerical Control (CNC) machine operators, while excellent for their time, varied from brief inexpensive tutorials to expensive on the job training. A CNC machine uses a computer to perform the functions of the machine using a part program stored in the memory of the computer. This thesis describes a Virtual Reality (VR) model of a CNC milling machine, implemented within a VR environment representing a CNC workshop. Its development and …

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Experimental Validation Of Finite Element Analysis Software Applied To The Design Of A Motorcycle Swingarm, Bret Schaller Nov 1996

Experimental Validation Of Finite Element Analysis Software Applied To The Design Of A Motorcycle Swingarm, Bret Schaller

Master's Theses - Daytona Beach

This thesis documents the experimental validation of finite element analysis software applied to the design of a motorcycle swingarm. The process includes design and implementation of an onboard data acquisition system; definition and measurement of operational loads; laboratory correlation of loads; experimental validation of Pro/Mechanica finite element analysis software; design and prototype development of a single-sided motorcycle swingarm; and computer modeling using the Pro/Engineer solid modeling package.

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Selection And Implementation Of A Cad/Software System For Navigator Boats, Brian J. Finzel Dec 1992

Selection And Implementation Of A Cad/Software System For Navigator Boats, Brian J. Finzel

Honors Capstone Projects and Theses

No abstract provided.

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Toward The Optimization Of Cell Operator Productivity In Computer Integrated Manufacturing, David Leonard Gobeski Jan 1991

Toward The Optimization Of Cell Operator Productivity In Computer Integrated Manufacturing, David Leonard Gobeski

Dissertations and Theses @ UNI

Computer integrated manufacturing (CIM) has been seen as the answer to maintaining the lead in American productivity. The cell operator was seen as being critical to the success of CIM. The design of the operator's job was seen as very important. As manufacturing engineers design cell jobs, including the roles and tasks, with the operators, it was believed important for the engineer to know what motivated the cell operator. However, past studies of supervisors and their subordinates have shown that supervisors are unable to predict the importance of the elements of job enrichment of the subordinates. It was questioned whether …

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Computer Solution To Inverse Problems Of Elliptic Form: V²U(X,Y) = G(A,U,X,Y), Frederick Alvin Jeter Dec 1971

Computer Solution To Inverse Problems Of Elliptic Form: V²U(X,Y) = G(A,U,X,Y), Frederick Alvin Jeter

Dissertations and Theses

One important aspect of our present age of monolithic high speed computers is the computer's capability to solve complex problems hitherto impossible to tackle due to their complexity. This paper explains how to use a. digital computer to solve a specific type of problem; specifically, to find the inverse solution of a in the elliptical equation V2U(x,y) = g(a,U,x,y), with appropriate boundary conditions. This equation is very useful in the electronics field. The knowns are the complete set of boundary values of U(x,y) and a set of observations taken on internal points of U(x,y). Given this information, plus …

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Direct Design Of A Portal Frame, Angel Fajardo Ugaz May 1971

Direct Design Of A Portal Frame, Angel Fajardo Ugaz

Dissertations and Theses

This investigation was undertaken to develop plastic design aids to be used in the direct design of optimum frames. It uses the concept of minimum weight of plastically designed steel frames, and the concept of linear programming to obtain general solutions. Among the special characteristics of this study are: A. The integration of both gravity and combined loading conditions into one linear programming problem. B. The application of the revised simplex method to the dual of a parametric original problem. C. The application of A and B above in the development of design aids for the optimum design of symmetrical …

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