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 18 of 18 for “"passive energy"”.
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Passive energy management in acoustical and dynamical systems
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2024-09-16 without embargo terms
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Heat and mass transfer in porous materials for passive energy-conversion devices
L'abstract è presente nell'allegato / the abstract is in the attachment
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The Door of Return Museum of Senegal
… systems in a harmonious manner that maximizes passive energy solutions to the fullest extent possible. When doing so problems exist both environmental and contextual yet resolutions can be rewarding to the client, community, and most important the end-user. Overcoming problematic challenges …
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Resonant-type architectures for active power decoupling in grid-tied single-phase power electronics
… circuits are used to buffer the instantaneous energy difference between the AC and DC sides of the converter. Active buffer implementations are used to reduce the volume and potentially improve the reliability of the converter by redistributing passive energy storage requirements with …
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The development of a selection criteria model for the type of seismic retrofitting scheme applicable to Philippine buildings
… strategies such as Seismic Isolation, Passive Energy Dissipation and Active Systems. An analysis of the rehabilitation process given by the Federal Emergency Management Agency is presented. The most significant factor affecting the modifications is the level of seismic activity in the …
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Seismic design of energy dissipation systems for optimal structural perfromance
The usefulness of supplementary energy dissipation devices is now quite well-known in the earthquake structural engineering community for reducing the earthquake-induced response of structural systems. However, systematic design procedures for optimal sizing and placement of these protective …
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Enabling miniaturized grid-interface power conversion
… of the twenty-first century revolve around energy and its management. Improved performance (efficiency, density) in electrical energy management systems require advancements in a number of areas - semiconductor devices, passive energy storage components, and a variety of circuit- and …
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Seismic Response of Structures with Added Viscoelastic Dampers
Several passive energy dissipation devices have been implemented in practice as the seismic protective systems to mitigate structural damage caused by earthquakes. The solid viscoelastic dampers are among such passive energy dissipation systems. To examine the response reducing effectiveness of …
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Digital cellular solids : reconfigurable composite materials
… to meet important engineering needs, such as passive energy absorption, but they are not in widespread use for structural applications, perhaps due to a large gap between the strength and stiffness to weight ratios of popular classical solids, and the performance of known lightweight cellular …
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Designing a Wearable, Centimeter-Scale Generator Powered by Human Movement
… this work presents a compliant, centimeter-scale energy harvesting system that con- verts stored pneumatic energy via human movement into electricity intended to recharge a battery. The system design uses human footstrikes to pump air into an on-body pneumatic storage pouch. The released air then …
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Numerical Simulation of Natural Convection in Rectangular Enclosures of Varying Aspect Ratios and its Feasibility in Environmental Impact Management Studies
… Included in these applications are the energy efficient design of buildings, operation and safety of nuclear reactors, solar collector design, passive energy storage, heat transfer across multi-pane windows, thermo-electric refrigeration and heating devices, and the design-for-mitigation …
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Development, Analysis and Testing of a Hybrid Passive Control Device for Seismic Protection of Framed Structures
… seismic protection strategy called the hybrid passive control device (HPCD) has been developed which combines typical passive energy dissipation devices. It consists of a high damping rubber (HDR) sandwich damper in series with a buckling restrained brace (BRB). The HPCD provides energy …
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Control of large-scale structures with large uncertainties
… appropriately sizing stiffnesses, but recently, passive energy dissipation systems have gained popularity. Semi-active and active energy dissipation systems have been shown to outperform purely passive systems, but they are not yet widely accepted in the construction and structural engineering …
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Application of visco-hyperelastic devices in structural response control
… to performance based engineering, in which energy dissipation systems in structural frameworks assume prime importance. A visco-hyperelastic device is a completely new type of passive energy dissipation system that not only combines the energy dissipation properties of velocity and …
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Use of Permanent Magnets to Improve the Seismic Behavior of Light-Framed Structures
… seismic design approach. The main source of energy dissipation in such structures is the inelastic behavior of the connectors connecting framing and sheathing elements. Wood framed structures when subjected to strong ground excitations experience structural and non-structural damage which may …
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Adaptive thermal comfort and its application in mixed mode buildings: The case of a hot-summer and cold-winter climate in China
… may lead to a significant reduction in cooling energy. This method is believed to be flexible in dealing with different environments with various levels of adaptations and likely to be advantageous over the steady-state and adaptive models in predicting thermal comfort temperature of an …
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Design and Evaluation of a Quasi-Passive Variable Stiffness Ankle-Foot Prosthesis to Improve Biomechanics Across Walking Speeds
… an ankle-foot prosthesis which increases energy storage and return, increases peak power, and decreases contralateral limb loading in a low-mass, quasi-passive device. This is achieved by automatically adjusting prosthesis stiffness to maximize energy storage across walking speeds. A novel …
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Using Incremental Dynamic Analysis to Visualize the Effects of Viscous Fluid Dampers on Steel Moment Frame Drift
This thesis presents the details of a study regarding both the use of linear viscous fluid dampers in controlling the interstory drift in steel moment frames, and the use of incremental dynamic analysis as a method of visualizing the behavior of these moment frames when subjected to seismic load …