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An evaluation of finite element models of stiffened plates subjected to impulsive loading
(Massachusetts Institute of Technology, 2004)
Different finite element models are evaluated for two very common structures, a cantilever beam and a stiffened plate, subjected to impulsive loading. For the cantilever beam case, the finite element models are one, two ...
Force and hydrodynamic efficiency measurements of a three-dimensional flapping foil
(Massachusetts Institute of Technology, 2004)
Investigations into unsteady flapping foil propulsion have shown that it is an efficient and high thrust means of propulsion. Extensive work has been done to optimize the efficiency of two-dimensional flapping foils, varying ...
An experimental study of the oil evolution in critical piston ring pack regions and the effects of piston and ring designs in an internal combustion engine utilizing two-dimensional laser induced fluorescence and the impact on maritime economics
(Massachusetts Institute of Technology, 2004)
Faced with increasing concern for lubricating, oil consumption and engine friction, it is critical to understand the oil transport mechanisms in the power cylinder system. Lubricating oil travels through distinct regions ...
Hydrofoil shape optimization by gradient methods
(Massachusetts Institute of Technology, 2004)
A study was carried out to develop and test techniques for the computational optimization of hydrofoil sections and lifting surfaces advancing under a free surface. A mathematical model was developed based on the extension ...
Effect of hull-to-bulkhead flexible connection on blast resistance of double hulled ships
(Massachusetts Institute of Technology, 2004)
The use of double hull construction is commonplace within the shipping industry though it is largely unexploited within naval vessels. The Impact and Crashworthiness Lab at MIT has proposed the use of adaptive sandwich ...
Underwater acoustic signal behavior prediction in the region of Kauai Island
(Massachusetts Institute of Technology, 2004)
Behavior of underwater sound propagation over long-ranges has been studied for several decades. The purpose of this is to describe sound propagation phenomena in various ocean environments. The key to understanding and ...
Shape optimization theory and applications in hydrodynamics
(Massachusetts Institute of Technology, 2004)
The Lagrange multiplier theorem and optimal control theory are applied to a continuous shape optimization problem for reducing the wave resistance of a submerged body translating at a steady forward velocity well below a ...