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Pages
- Title
- The finite element method as a parametric tool in the design and analysis of a pressure vessel having a threaded closure.
- Creator
- Merkl, Garrett Andrew., Florida Atlantic University, Case, Robert O., Tsai, Chi-Tay, College of Engineering and Computer Science, Department of Ocean and Mechanical Engineering
- Abstract/Description
-
The finite element method is a very powerful tool used to analyze a variety of problems in engineering. This thesis looks at the finite element method as a tool and several important modeling features of concern. A well known finite element software package, ANSYS, will be used to demonstrate a diverse number of its capabilities, and several procedures followed in solving a specific engineering problem. The subject matter involves a nonlinear contact analysis of a pressure vessel having a...
Show moreThe finite element method is a very powerful tool used to analyze a variety of problems in engineering. This thesis looks at the finite element method as a tool and several important modeling features of concern. A well known finite element software package, ANSYS, will be used to demonstrate a diverse number of its capabilities, and several procedures followed in solving a specific engineering problem. The subject matter involves a nonlinear contact analysis of a pressure vessel having a threaded closure. The choice of this application is prompted by an interest in better understanding how the finite element method is implemented in the design and analysis of different pressure vessel parameters. A parametric finite element analysis was performed. Load and stress distributions along the threaded region of the vessel were examined for parameters including number of threads, thread pitch, diameter ratio, closure plug length, and thread profile.
Show less - Date Issued
- 1996
- PURL
- http://purl.flvc.org/fcla/dt/15243
- Subject Headings
- Finite element method, Pressure vessels--Design and construction, Strains and stresses--Mathematical models
- Format
- Document (PDF)
- Title
- Improved design methods for evaluating the performance of landfill double liner systems.
- Creator
- Shivashankar, Mirle R., Florida Atlantic University, Fluet, J. E. Jr., Reddy, Dronnadula V., College of Engineering and Computer Science, Department of Ocean and Mechanical Engineering
- Abstract/Description
-
Many modern landfills are constructed with double liner systems. Leachate leakage rates through double liner systems are calculated using recently developed formulations which are theoretically correct for leakage detection system (LDS) materials that have unrestricted lateral flow properties. But their applicability to geonets, the most commonly used LDS material, has yet to be determined. In double liner systems, the leakage through the primary liner, the properties of the LDS material, and...
Show moreMany modern landfills are constructed with double liner systems. Leachate leakage rates through double liner systems are calculated using recently developed formulations which are theoretically correct for leakage detection system (LDS) materials that have unrestricted lateral flow properties. But their applicability to geonets, the most commonly used LDS material, has yet to be determined. In double liner systems, the leakage through the primary liner, the properties of the LDS material, and the slope of the LDS determine the flow patterns in the LDS. These flow patterns are then used to determine the amount of leachate, if any, which leaks through the bottom liner into the ground. This thesis describes the experimental determination of the flow patterns in the geonets and their relationships to established design formulations.
Show less - Date Issued
- 1995
- PURL
- http://purl.flvc.org/fcla/dt/15197
- Subject Headings
- Sanitary landfills--Leaching, Sanitary landfills--Linings, Geosynthetics
- Format
- Document (PDF)
- Title
- THE APPLICATION OF THE ENERGY ACCOUNTANCY EQUATION IN THE INVESTIGATION OF ENERGY TRANSFER IN A THIN WALLED SHELL STRUCTURE.
- Creator
- SCHAPLEY, RAMON FRANK, II., Florida Atlantic University, Dunn, Stanley E., Cuschieri, Joseph M., College of Engineering and Computer Science, Department of Ocean and Mechanical Engineering
- Abstract/Description
-
The Energy Accountancy method is used to describe the response of a system by accounting for the various energy components in a system, that is components describing the input energy, the energy dissipated, and the energy transfered by the system. These components are functions of quantities that can be determined either through measurement or finite element analysis of the system. This concept is used in this study to determine the response of a small diameter pipe containing two different...
Show moreThe Energy Accountancy method is used to describe the response of a system by accounting for the various energy components in a system, that is components describing the input energy, the energy dissipated, and the energy transfered by the system. These components are functions of quantities that can be determined either through measurement or finite element analysis of the system. This concept is used in this study to determine the response of a small diameter pipe containing two different fluids, air and water. The results of this study have shown that the Snergy Accountancy method can be used to describe the response of a thin walled shell structure with good results. It has also been shown in this study that in small diameter pipes the fluid contained by the system can be considered to act as a reactive medium in the response of the structure.
Show less - Date Issued
- 1985
- PURL
- http://purl.flvc.org/fcla/dt/14277
- Subject Headings
- Force and energy--Analysis, Force and energy--Measurement
- Format
- Document (PDF)
- Title
- The role of monitoring wells in modern landfill designs.
- Creator
- Reddi, Vinod Jayasankar, Florida Atlantic University, Fluet, J. E. Jr., Scarlatos, Panagiotis (Pete) D., College of Engineering and Computer Science, Department of Ocean and Mechanical Engineering
- Abstract/Description
-
Modem technology has led to a new generation of landfill liner systems that are highly efficient at intercepting and removing leachate. Many of the modem liner systems are so effective that little or no leakage occurs through the liner systems. What leakage may occur is so minimal that, although it can be theoretically predicted, it cannot be measured, i.e., the resulting groundwater concentrations are well beneath minimum detection levels of available monitoring well technology. In addition...
Show moreModem technology has led to a new generation of landfill liner systems that are highly efficient at intercepting and removing leachate. Many of the modem liner systems are so effective that little or no leakage occurs through the liner systems. What leakage may occur is so minimal that, although it can be theoretically predicted, it cannot be measured, i.e., the resulting groundwater concentrations are well beneath minimum detection levels of available monitoring well technology. In addition to being highly effective, some modem liner systems are constructed with two liners separated by a drainage medium which detects and removes any leakage through the top liner. These significant improvements in liner system technology have led many landfill designers, operators, and regulators to question the necessity for current monitoring well practices. Currently, landfills are required to have a large number of monitoring wells, and the associated large installation, sampling, and testing costs are inevitably reflected in higher tipping fees or higher taxes. In either case, the costs are borne by the public. If the number and frequency of sampling of monitoring wells could be reduced, significant cost savings could be realized, and the money saved could perhaps be better spent elsewhere. This thesis reports the results of research conducted at eleven landfills constructed with modem landfill liner systems to determine the actual and probable efficacy of the role o: monitoring wells, and conducts a cost-saving analysis to evaluate whether funds would have been better spent elsewhere.
Show less - Date Issued
- 1994
- PURL
- http://purl.flvc.org/fcla/dt/15019
- Subject Headings
- Fills (Earthwork), Leachate, Sanitary landfills--Linings, Waste disposal in the ground
- Format
- Document (PDF)
- Title
- Study of corrosion-induced failure mechanisms of epoxy-coated reinforcing steel.
- Creator
- Lee, Seung-Kyoung, Florida Atlantic University, Hartt, William H., McIntyre, Jack F., College of Engineering and Computer Science, Department of Ocean and Mechanical Engineering
- Abstract/Description
-
A study of the corrosion protection afforded by epoxy coatings on reinforcing steel was performed. To accomplish this bars were acquired from ten sources and coatings were characterized in terms of defects, thickness, solvent extraction weight loss and hardness. Testing involved exposure in various aqueous solutions at both ambient temperature and 80$\sp\circ$C and in chloride-contaminated concrete slabs under outdoor exposure. Direct pull-off adhesion testing was performed on tested and...
Show moreA study of the corrosion protection afforded by epoxy coatings on reinforcing steel was performed. To accomplish this bars were acquired from ten sources and coatings were characterized in terms of defects, thickness, solvent extraction weight loss and hardness. Testing involved exposure in various aqueous solutions at both ambient temperature and 80$\sp\circ$C and in chloride-contaminated concrete slabs under outdoor exposure. Direct pull-off adhesion testing was performed on tested and virgin epoxy coated reinforcing steels (ECRs). Electrochemical impedance spectroscopy (EIS) scans were made periodically, and a curve fitting technique was employed to analyze coating parameters. Conventional electrochemical measurements were also made, and corrosion morphology of ECR specimens was examined. It was found that the density and size of coating defects was the primary factor affecting ECR performance. The circuit analysis indicated that poorly performing defect-free coatings absorbed water and oxygen; and these species reached the coating/substrate interface and electrochemical reactions at the interface caused coating degradation. By way of contrast, the impedance response for well-performing ECR specimens showed no signs of active degradation at the interface although diffusional processes similar to those noted for poorly performing bars occurred here also. Experimental results indicated a relationship between corrosion behavior and bar source. Weight loss upon solvent extraction correlated with impedance reduction from hot water exposure. Coating defects developed during most of the tests, especially in high pH solutions containing chloride ions. ECRs with excessive coating defects, either initially present or ones which developed in service, performed poorly in every test category regardless of source. Forms of coating failure were extensive rusting at defects, blistering, wet adhesion loss, cathodic delamination, underfilm corrosion and coating cracks. These occurred sequentially or concurrently, depending on the condition of the ECR and nature of the environment.
Show less - Date Issued
- 1994
- PURL
- http://purl.flvc.org/fcla/dt/12389
- Subject Headings
- Corrosion and anti-corrosives, Epoxy coatings, Steel--Corrosion, Concrete--Corrosion
- Format
- Document (PDF)
- Title
- Location-Aware Source Routing Protocol for Underwater Acoustic Networks of AUVs.
- Creator
- Carlson, Edward A., Beaujean, Pierre-Philippe J., An, Edgar
- Date Issued
- 2012
- PURL
- http://purl.flvc.org/fau/flvc_fau_islandoraimporter_10.1155_2012_765924_1629746277
- Format
- Citation
- Title
- MIMO Underwater Acoustic Communications in Ports and Shallow Waters at Very High Frequency.
- Creator
- Real, Gaultier, Beaujean, Pierre-Philippe, Bouvet, Pierre-Jean
- Date Issued
- 2013-10-11
- PURL
- http://purl.flvc.org/fau/flvc_fau_islandoraimporter_10.3390_jsan2040700_1632229234
- Format
- Citation
- Title
- Task Allocation and Path Planning for Collaborative Autonomous Underwater Vehicles Operating through an Underwater Acoustic Network.
- Creator
- Deng, Yueyue, Beaujean, Pierre-Philippe J., An, Edgar, Carlson, Edward
- Date Issued
- 2013
- PURL
- http://purl.flvc.org/fau/flvc_fau_islandoraimporter_10.1155_2013_483095_1629813605
- Format
- Citation
- Title
- Design and assessment of a flexible fish robot actuated by shape memory alloys.
- Creator
- Coral, William, Rossi, Claudio, Curet, Oscar M, Castro, Diego
- Date Issued
- 2018-07-31
- PURL
- http://purl.flvc.org/fau/flvc_fau_islandoraimporter_10.1088_1748-3190_aad0ae_1642527471
- Format
- Document (PDF)
- Title
- Hydrodynamics of mangrove-type root models: the effect of porosity, spacing ratio and flexibility.
- Creator
- Kazemi, Amirkhosro, Van de Riet, Keith, Curet, Oscar M
- Date Issued
- 2017-09-21
- PURL
- http://purl.flvc.org/fau/flvc_fau_islandoraimporter_10.1088_1748-3190_aa7ccf_1642522620
- Format
- Document (PDF)
- Title
- Fluid dynamics of the larval zebrafish pectoral fin and the role of fin bending in fluid transport.
- Creator
- Green, Matthew H, Curet, Oscar M, Patankar, Neelesh A, Hale, Melina E
- Date Issued
- 2012-12-05
- PURL
- http://purl.flvc.org/fau/flvc_fau_islandoraimporter_10.1088_1748-3182_8_1_016002_1642521175
- Format
- Document (PDF)
- Title
- A generalized model for communicating individuality through teleost swim bladder modulation.
- Creator
- Matthews, Cameron A., Beaujean, Pierre-Philippe J.
- Date Issued
- 2018-01-01
- PURL
- http://purl.flvc.org/fau/flvc_fau_islandoraimporter_10.1242_bio.023515_1632231130
- Format
- Citation
- Title
- Enhancing Fatigue Performance of Sandwich Composites with Nanophased Core.
- Creator
- Zainuddin, S., Mahfuz, Hassan, Jeelani, S.
- Date Issued
- 2010
- PURL
- http://purl.flvc.org/fau/fd/FAUIR000169
- Format
- Citation
