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- Browsing Theses and Dissertations (Mechanical and Aeronautical Engineering) by Issue Date
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Browsing Theses and Dissertations (Mechanical and Aeronautical Engineering) by Issue Date
Now showing items 21-40 of 363
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(University of Pretoria, 2006-03-08)Specialized techniques are needed to solve global optimization problems, due to the existence of multiple local optima or numerical noise in the objective function. The complexity of the problem is aggravated when ...
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(University of Pretoria, 2006-05-19)Please read the abstract in the section 00front of this document
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(University of Pretoria, 2006-06-03)Vibration isolation is a procedure through which the transmission of oscillating disturbances or forces is reduced. The ideal isolator is one that will support the equipment being isolated without transmitting any dynamic ...
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(University of Pretoria, 2006-06-03)Interaction of various components in rotating machinery like gearboxes may generate excitation forces at various frequencies. These frequencies may sometimes overlap with the frequencies of the forces generated by other ...
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(University of Pretoria, 2006-06-03)Due to a relative high thermal efficiency, the gas turbine engine has wide ranging applications in various industries today. The aerospace and power generation sectors are probably the best known. One method of increasing ...
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(University of Pretoria, 2006-07-12)Simulation is one of the oldest and also among the most important tools available to engineers. In the building Heating, Ventilating and Air-Conditioning (HVAC) community the availability and/or functionality of simulation ...
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(University of Pretoria, 2006-07-12)The detection of damage in structures through the use of vibrational methods offers particular advantages, which makes it an attractive method to use in specific applications. In this work the advantages and some of the ...
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(University of Pretoria, 2006-07-12)Please read the abstract in the section 00front of this document
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(University of Pretoria, 2006-07-20)Line-of-sight stabilization of an optical instrument using magnetostnctlve actuators is described in this study. Various stabilization methods, i.e. gyroscopic, hydraulic, piezoelectric, electrodynamic and magnetostrictive ...
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(University of Pretoria, 2006-07-27)This thesis is primarily concerned with a description of four types of stochastic algorithms, namely the genetic algorithm, the continuous parameter genetic algorithm, the particle swarm algorithm and the differential ...
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(University of Pretoria, 2006-07-28)Over the years, different lubricants have been used to operate hip simulators. The current applicable ISO standard (ISO 14242-1:2002) recommends the use of 25% calf serum diluted with deionised water. The standard further ...
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(University of Pretoria, 2006-07-28)A need for a cost effective, versatile and easy to use suspension component testing method has arisen, following the development of a four-state hydro-pneumatic semi-active spring-damper system. A method known as ...
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(University of Pretoria, 2006-07-28)An existing analytical model, in use by Spoornet for the past two decades for calculating rail stresses on railway track, was revisited and improved. The model provided engineers with an easy-to-use program for evaluating ...
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(University of Pretoria, 2006-09-20)Please read the abstract (Summary) in the 00front part of this document
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(University of Pretoria, 2006-09-23)Vibrating machinery like rock drills and compactors are becoming more prominent in modem industry. The vibrations of these machines can damage surrounding structures and foundations and be harmful to their operators. Hand ...
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(University of Pretoria, 2006-10-07)The demand for higher quality steel and higher production rates in the production of steel slabs is ever increasing. These slabs are produced using a continuous casting process. The molten steel flow patterns inside the ...
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(University of Pretoria, 2006-10-12)Please read the abstract (Summary) in the 00front part of this document
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(University of Pretoria, 2006-11-01)This thesis deals with the mathematical idealization denoted cellular automata (CA) and the applicability of this method to structural mechanics. When using CA, all aspects such as space and time are discrete. This discrete ...
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(University of Pretoria, 2006-11-01)Please read the abstract in the section 00front of this document
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(University of Pretoria, 2006-11-01)It is standard practice in one-dimensional gasdynamic simulations of high performance two-stroke engines to model the exhaust tail pipe entry as an area change using an algorithm similar to the area change of the reverse ...
Now showing items 21-40 of 363