Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 56 for “"Flexible Structure"”.
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The control of flexible structure vibrations using a cantilevered adaptive truss
… procedures and design tools for the control of flexible structure vibrations using a cantilevered adaptive truss. A specific six-actuator, octahedral-octahedral truss effects the control of different flexible structures. These structures could represent space structures or robotic manipulators …
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Distributed-effect modal domain optical fiber sensors for flexible structure control
… sensors are particularly attractive for smart structure and materials applications because they have low mass, are flexible, and can be easily embedded in a variety of materials. Distributed-effect sensors can be fabricated with spatially varying sensitivity to the distributed measurand and act …
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Performance evaluation of innovative toggle brace damper for flexible structure seismic upgrade
Amplifying the motion of viscous dampers has been recognized as an effective solution to mitigate structural response to wind and seismic excitation. Motion amplification devices are designed to amplify a small interstory drift to intensify the stroke of the dampers attached. The efficiency of such …
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Living With Water: How Flexible Structure Types Build Resilience in a Dynamic Landscape？
… adopted mitigation methods, such as stronger structures and higher elevations, are showing limitations given land loss due to sea level rise. This research explores alternative strategies in the land use planning and architectural realm to enhance hazard resilience in Mexico Beach. The …
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Discrete and continuous dynamics modeling of a mass moving on a flexible structure
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1992.
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Towards a more flexible structure of the share capital - A comparison of the company law of South Africa and Switzerland with regard to current debates and developments in the EU
… and Switzerland with regard to the share capital structure will be examined as well as the movements within both countries towards a more flexible capital structure. This will be followed by a preview on probable future reform steps. Thereby the developments in Switzerland cannot be analyzed …
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Three-Dimensional Analysis of Wave Attenuation by Anchored Hemicylindrical Shell
The performance of a flexible structure as a breakwater is investigated numerically. The structure is a hemicylinder and is filled with water of uniform pressure. It is anchored along the sides. Only flexural modes are present. The structure is modeled as an elastic shell using the finite element …
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Nonlinear spline operator interpolation and sliding control of deformable maneuvering bodies
… of tracking, and precision pointing of a flexible structure subject to large angular maneuvers (such as the slewing maneuver of a large space structure), a newly developed off-line modeling procedure combined with a robust control technique is investigated and then implemented to the …
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Weighted sensitivity optical fiber sensors: theory and applications
… of the dual mode fiber endpoints upon a flexible structure is investigated. Modal filtering behavior will result if the endpoints are chosen to span two antinodes of the underlying structure. To truly achieve signal processing capabilities, spatially weighting the sensitivity of the …
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Optimizing Parameters and Controls for Maneuvering Flexible Structures
… the parameters and the control for maneuvering flexible structures is addressed. The necessary conditions for the general problem are defined and a numerical technique for the solution is discussed. Implementing the numerical solution is shown to be practical using reduced-order structural …
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Nonlinear Fluid-Structure Interaction in a Flexible Shelter under Blast Loading
Recently, numerous flexible structures have been employed in various fields of industry. Loading conditions sustained by these flexible structures are often not described well enough for engineering analyses even though these conditions are important. Here, a flexible tent with an interior …
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Aplicação de diferenças finitas energéticas em placas com o uso de malhas arbitrárias
… difference energy method with the improvement of flexible mesh discretization. The theory has been set down in such a way as to be particularly useful to a systematic program implementation. This procedure puts the finite difference ideas into a more programable and flexible structure, so that the …
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Design Optimization of a High Aspect Ratio Rigid/Inflatable Wing
… long endurance aircraft are generally more flexible structures than the traditional wing; therefore, they require modeling methods capable of handling a flexible structure even at the preliminary design stage. This work describes a design optimization method for combining rigid and …
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Design,formulation and synthesis of UV/Thermal dual cure, bio-based polyurethane coatings
… some of the limitations associated with soft and flexible structure of soy-based polyols, the resin has been designed with two unique set of functional groups –OH and acrylate, as a means of crosslinking sites. Such resin system can be cured by two independent cure mechanisms – (a) thermal (or …
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Twentieth century Chinese architecture : examples and their significance in a modern tradition
… the principles nevertheless provide a flexible structure and the leeway for change; as Chinese history has proven that rigidity most often results in decline and defeat. Moreover, it has provided a base for the growth of knowledge, readily adapting to the Marxist and Maoist methodology …
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Compensator design for a system of two connected beams
… compensators. A specific multiple component flexible structure is used to focus the analysis and to test problem in numerical simulations. An abstract framework for analysis and approximation of the corresponding dynamics system is developed and used to design finite - dimensional …
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Inclusive teaching practice in the Jewish day school: general studies teachers' experiences /
… respective grade 4 classrooms in 2 traditionally structured dual curriculum Jewish day schools. Data analysis of qualitative open-ended interviews, classroom observations, postobservation discxissions, and school and formal curriculum documents yielded understandings about the participants' …
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Renovation proposal for Fenway Park
… oldest stadium in baseball history, the existing structure of Fenway Park presents problems such as limiting seating capacity and obstructed views, caused by the columns supporting the second level. Opened in 1912, this stadium is considered one of today's most historical sporting venues. In 2005, …
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Performance improvement of a proof-mass actuator using nonlinear control
… is studied for vibration suppression of a flexible structure. While these actuators have a favorable force-to-weight ratio, the finite travel of the proof-mass, called the stroke length, imposes restrictions on the use of the actuator. This restriction implies that the actuator has a finite …
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An automated spatial decision support system for the relocation of Army Reserve Units
… Support System (SDSS). This SDSS provides a flexible structure that can be generalized to serve as an executable conceptual model for a wide range of decisions containing significant geographic or location related components. The Army Reserve Installation Evaluation System (ARIES) integrates …
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