Index Catalog // ScholarsArchive@OSU

A nonlocal damage theory for laminated plate with application to aircraft damage tolerance

Creator:: Nahan, Matthew F.
Abstract:: Design of commercial aircraft structure, composed of composite material, requires the prediction of failure loads given large scale damage. In particular, a fuselage of graphite/epoxy lamination was analyzed for damage tolerance given a standard large crack that severed both skin and internal structure. Upon loading, a zone of damage is...
Resource Type:: Dissertation
Full Text:: to aircraft damage tolerance AN ABSTRACT OF THE DISSERTATION OF Matthew F. Nahan for the degree

Transient nonlinear deformations of viscoelastic membranes

Creator:: Jenkins, Christopher H. M.
Resource Type:: Dissertation
Full Text:: advisor Dr. John W. Leonard, without whose guidance and patience this thesis would not have been

Characterizing Linkages Between the Climate, Cryosphere, and Impacts on Run-of-River Hydropower in Data-Sparse Mountain Environments

Creator:: Mosier, Thomas M.
Abstract:: In many regions of the world, a significant portion of the surface water originates in mountain headwaters where the timing and magnitude of streamflow is largely dictated by the seasonal storage of precipitation as snowpack and long-term storage as glaciers. Accumulation, persistence, and melt of snow and ice are functions...
Resource Type:: Dissertation
Full Text:: : Kendra V. Sharp David F. Hill In many regions of the world, a significant portion of the surface water

Reduced order modeling of legged locomotion in the horizontal plane

Creator:: Wickramasuriya, Gamika Arun
Abstract:: Sprawled-posture insects exhibit a remarkable ability to rapidly run in a stable manner over complex terrain, a feat that has yet to be equaled by man-made legged robots. Recent experimental results suggest that these insects may employ a hierarchical control structure, in which locomotion performance emerges from a combination of...
Resource Type:: Dissertation
Full Text:: : Reduced Order Modeling of Legged Locomotion in the Horizontal Plane Abstract approved: John Schmitt

Dynamic modeling, control aspects and model predictive control of a parafoil and payload system

Creator:: Slegers, Nathan J.
Abstract:: Control issues are investigated for a parafoil and payload system with left and right parafoil brakes used as the control mechanism. It is shown through dynamic modeling and simulation that parafoil and payload systems can exhibit two basic modes of lateral control, namely, roll and skid steering. Using a small...
Resource Type:: Dissertation
Full Text:: Mark F. Costello Control issues are investigated for a parafoil and payload system with left and

Robust lateral pulse jet control of an atmospheric rocket

Creator:: Burchett, Bradley Thomas
Abstract:: Uncontrolled direct fire rockets exhibit high impact point dispersion, even at relatively short range, and as such have been employed as area weapons on the battlefield. In order to reduce the dispersion of a direct fire rocket, feedback control is employed to fire short-duration solid rocket pulses mounted near the...
Resource Type:: Dissertation
Full Text:: Rocket. Abstract approved:_ ________ Mark F. Costello Uncontrolled direct fire rockets exhibit high

Lateral pulse jet control of a direct fire atmospheric rocket using an inertial measurement unit sensor system

Creator:: Jitpraphai, Thanat
Abstract:: Impact point dispersion of a direct fire rocket can be drastically reduced with a ring of appropriately sized lateral pulse jets coupled to a trajectory tracking flight control system. The system is shown to work well against uncertainty in the form of initial off-axis angular velocity perturbations as well as...
Resource Type:: Dissertation
Full Text:: . Abstract approved: Mark F. Costello Impact point dispersion of a direct fire rocket can be drastically

Dynamic modeling, control and linear theory of a projectile equipped with a rotating internal part

Creator:: Frost, Geoffrey W.
Abstract:: Dynamic modeling of the atmospheric flight mechanics of a projectile equipped with an uncontrolled internal rotating disk is investigated and a modified projectile linear theory is established. It is shown through modeling of this type of projectile that several coefficients of the epicyclic dynamics are altered, leading to changes in...
Resource Type:: Dissertation
Full Text:: INTERNAL PART IN ATMOSPHERIC FLIGHT Geoffrey W. Frost and Mark F. Costello Journal of Guidance, Control

Experimental Investigations of the Unsteady Aerodynamics of Oscillating Airfoils Operating in the Energy Harvesting Regime

Creator:: Siala, Firas F.
Abstract:: The rising global trend to reduce dependence on fossil fuels has provided significant motivation toward the development of alternative energy conversion methods and new technologies to improve their efficiency. Recently, oscillating energy harvesters have shown promise as highly efficient and scalable turbines, which can be implemented in areas where traditional...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Firas F. Siala for the

Further Development of MPM and its Applications in Modeling Wood-Adhesive Bonds

Creator:: Hammerquist, Chad C.
Abstract:: This work is a culmination of a series of published works related to the use of the Material Point Method (MPM) in modeling wood adhesive bonds. The use of wood as construction material has the potential to play a small role in the solution to the current CO2 and climate...
Resource Type:: Dissertation
Full Text:: Abstract approved: John A. Nairn This work is a culmination of a series of published works related to the

ScholarsArchive@OSU

A nonlocal damage theory for laminated plate with application to aircraft damage tolerance

Transient nonlinear deformations of viscoelastic membranes

Characterizing Linkages Between the Climate, Cryosphere, and Impacts on Run-of-River Hydropower in Data-Sparse Mountain Environments

Reduced order modeling of legged locomotion in the horizontal plane

Dynamic modeling, control aspects and model predictive control of a parafoil and payload system

Robust lateral pulse jet control of an atmospheric rocket

Lateral pulse jet control of a direct fire atmospheric rocket using an inertial measurement unit sensor system

Dynamic modeling, control and linear theory of a projectile equipped with a rotating internal part

Experimental Investigations of the Unsteady Aerodynamics of Oscillating Airfoils Operating in the Energy Harvesting Regime

Further Development of MPM and its Applications in Modeling Wood-Adhesive Bonds

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