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Theses and Dissertations (Mechanical and Aeronautical Engineering): Recent submissions
Now showing items 361-380 of 380
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Elements with penalized equilibrium and rotational degrees of freedom in fracture mechanics problems (University of Pretoria, 2007-04-17)This thesis deals with the solution of linear elastic fracture mechanics problems. To solve the linear elastic fracture mechanics problems, the finite element method and path independent integrals are employed, namely ...
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(University of Pretoria, 2007-04-17)A mathematical model which predicts the cooling system performance for a rally car is derived in this study. A case study vehicle was made available by a local manufacturer for evaluation of the cooling system. Two heat ...
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(University of Pretoria, 2007-04-16)Please read the abstract in the section 00front of this document
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(University of Pretoria, 2007-04-12)Please read the abstract in the section, 00front of this document
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(University of Pretoria, 2007-04-10)This thesis deals with the topology optimization of plate and shell structures. The shell structures are modeled as plate-like at facets. Firstly, the formulation of the topology optimization problem is presented in an ...
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(University of Pretoria, 2009-04-28)For gas turbines, the demand for high-performance, more efficient and longer-life turbine blades is increasing. This is especially so, now that there is a need for high-power and low-weight aircraft gas turbines. Thus, the ...
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(University of Pretoria, 2007)It is accepted that defective structural designs are mostly caused by insufficient knowledge of input data, such as material properties or loading, rather than inadequate analysis or testing methods. In particular, loads ...
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(University of Pretoria, 2007-01-17)Please read the abstract in the section 00front of this document
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(University of Pretoria, 2010-06-04)It is common practice to design water chiller units and heat exchangers in such a way that they do not operate within the transition region. This is mainly due to the perceived chaotic behaviour as well as the paucity of ...
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(University of Pretoria, 2008-05-19)The conceptual design and basic layout of a modular refrigerant test system capable of flow condensation and evaporation were performed. The purpose of this study was the investigation of flow patterns during refrigerant ...
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(University of Pretoria, 2006-01-13)The analysis and optimum design of stiffened, shear webs in aircraft structures is addressed. The post-buckling behaviour of the webs is assessed using the interactive algorithm developed by Grisham. This method requires ...
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(University of Pretoria, 2007-01-12)Excessive vibration exerted on the human body can cause many harmful phenomena that can result in permanent bodily damage or permanent disability. Human vibration is classified into two main categories: Hand,arm vibration ...
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(University of Pretoria, 2007-01-12)An estimated 20% of South Africa's population is currently housed in low cost dwellings. These dwellings are extremely energy inefficient and it has been shown that these households spend almost 20% of their disposable ...
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(University of Pretoria, 2000)Please read the abstract in the section 00front of this document
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(University of Pretoria, 2007-01-12)Recently parallel platforms, also known as Stewart platforms, have been the subject of much active research because of their distinct advantages over serially linked manipulators. Parallel platforms may have a great impact, ...
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(University of Pretoria, 2007-01-12)Gas turbine engineering faces many challenges in the constant strive to increase not only the efficiency of engines but also the various stages of development and design. Development of combustors have primarily consisted ...
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(University of Pretoria, 2007-01-12)Please read the abstract in the section 00front of this document
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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, 2007-03-08)Please read the abstract in the section 00front of this document
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(University of Pretoria, 2011)An airfoil shape optimization problem with conflicting objectives is handled using two different multi-objective approaches. These are an a priori scalarization approach where the conflicting objectives are assigned weights ...
Now showing items 361-380 of 380