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A Micromechanics Model Of Thermal Expansion Coefficient In Fiber Reinforced Composites
(Aerospace Engineering, 2011-03-03)
Fiber reinforced composites are widely used for the various applications in the aerospace, automotive, infrastructures and sporting goods industries. The evaluations of its mechanical and thermal properties are needed for ...
Experimental Investigation Of Thermal Behaviour Of Air Foil Bearings
(Mechanical Engineering, 2011-03-03)
Micro-turbo machinery demands gas bearings to ensure compactness, lightweight and extreme temperature operation. Gas bearings with large stiffness and damping, and preferably of low cost, will enable successful commercial ...
Design Optimization Using Augmented Lagrangian Particle Swarm Optimization
(Mechanical Engineering, 2011-07-14)
Engineering optimization problems normally include multiple, non-trivial, non-linear constraints. Traditionally gradient based optimization methods were used to solve these types of problems because of their high computational ...
Imbalance Response Of A Four Degree Of Freedom Rigid Rotor Supported By Hybrid Three Pad Air Foil Bearing
(Mechanical Engineering, 2011-03-03)
Air foil bearings (AFB's) are widely used in small to midsized turbomachinery. They provide safer, cleaner and cheaper bearing operation. They are simple in construction, offer very low drag friction and have very high ...
Stress Analysis For A Three Phase Plate With A Concentric Circular Inclusion By Deriving An Airy Stress Function
(Mechanical Engineering, 2011-07-14)
This thesis derives the Airy stress function for a three phase plate that consists of two concentric circular inclusions and a matrix phase. It incorporates the elastic property of each phase as well as the geometry of the ...
Constrained Dynamics Approach For Motion Synchronization And Consensus
(Aerospace Engineering, 2011-03-03)
In this research we propose to develop constrained dynamical systems based stable attitude synchronization, consensus and tracking (SCT) control laws for the formation of rigid bodies. The generalized constrained dynamics ...
Aerodynamic Shape Optimization Of A Vertical Axis Wind Turbine
(Aerospace Engineering, 2011-07-14)
The purpose of this study is to introduce and demonstrate a fully automated process for optimizing the airfoil cross-section of a vertical axis wind turbine (VAWT). The objective is to maximize the torque while enforcing ...
Numerical Analysis Of The Interaction Between A Detonation Wave And Compressible Homogeneous Isotropic Turbulence
(Mechanical Engineering, 2011-07-14)
A numerical study was performed to investigate the effect of preshock turbulence on the detonation wave properties. A direct numerical simulation was performed on the chemically reactive Navier-Stokes equations using a ...
Preliminary Design Of Mesoscale Turbocompressor And Rotordynamics Tests Of Rotor Bearing System
(Mechanical Engineering, 2011-10-11)
A mesoscale turbocompressor spinning above 500,000 RPM is evolutionary technology for micro turbochargers, turbo blowers, turbo compressors, micro-gas turbines, auxiliary power units, etc for automotive, aerospace, and ...
Design Optimization Of A Wind Turbine Blade
(Aerospace Engineering, 2011-07-14)
This work focuses on designing a blade of 45 meters in length that produces a power of 1.6 MW. The design of the blade was done using the Blade Element Momentum theory and the Prandtl's tip loss factor was used. The ...