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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 399 for “"energy dissipation."”.
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Cyclic Plasticity and Structural Energy Dissipation
Made available in DSpace on 2014-12-12T00:25:55Z (GMT). No. of bitstreams: 1 7412152.pdf: 2785519 bytes, checksum: 65ce64d882568d86691ed018f4f8d9b6 (MD5) Previous issue date: 1973
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Shockwave energy dissipation by mechanoresponsive materials
… personnel exposed to shockwave-generating high-energy explosives results in costly and debilitating health effects. Novel approaches for shockwave energy dissipation (SWED) are demanded since conventional impact absorbing materials do not provide sufficient shockwave attenuation. This research …
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Modeling of mechanical energy dissipation of low-dimensional resonators
… of the NEMS critically depends on the mechanical energy dissipated by the resonator. Studies on dissipation are important because an understanding of the loss mechanisms can suggest ways to mitigate it. In most practical scenarios, the resonators suffer from intrinsic dissipation mediated by its …
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Experimental methods of measuring energy dissipation in acoustic resonators
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1991.
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Energy dissipation mechanisms during impact in jammed ductile granular media
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2026-12-01
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Improving energy dissipation to lower concussion risk in football helmets
… employing a foam shell to assist in the vertical energy dissipation. The pad currently used, along with the new dashpot system were further tested inside helmet shells on a head form drop test, and compared to the national standards that regulate athletic equipment.
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Energy dissipation in shape memory zirconia particles, packings, and composites
… ability to dissipate large amounts of kinetic energy. Because of their energy-absorbing properties, superelastic granular materials are of interest for development into applications involving force protection. Quasi-static, closed-die compression tests were conducted on granular packings of …
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Computational Design of Viscoelastic Gels with Tunable Mechanical Energy Dissipation
… generally, the capacity to tune the mechanical energy dissipation characteristics of such gels is of interest to a range of applications. The present work uses a computational approach to predict the material properties of such gels. A finite element model and simulation of an impact indentation …
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Effects of reflected waves on energy dissipation in breaking waves
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1999.
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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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Preliminary investigation of culvert outlet baffle block geometry and energy dissipation
One method used to attenuate high-energy flow at culvert outlets, is the construction of baffle blocks. Baffle blocks are devices, generally of simplistic geometry, that impact the flow and reduce energy. The current baffle design used by the WVDOH has in some instances experienced problems with …
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Precipitation of micro/nanoparticles in enhanced high energy dissipation mixing systems
… features that can increase the local rate of energy dissipation in the mixing precipitation zone where crystals are formed, thus promoting the formation of micro/nanoparticles, In this work, a submerged impinging jet system placed inside the tank was used in combination with another energy …
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Design Space Exploration of Digital Circuits for Ultra-low Energy Dissipation
… efforts in the development of small and low energy electronic devices. The driving force and benefactors of such devices are (but not limited to) e-health system, sensor network applications, security systems, environmental applications, and home automation systems. These markets have …
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Flow patterns and energy dissipation rates in batch rotor-stator mixers
The flow pattern and distribution of energy dissipation rate in a batch rotor-stator mixer fitted with disintegrating head have been numerically investigated. Standard k-e turbulence model in conjunction with sliding mesh method was employed and the simulation results were verified by laser Doppler …
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Development of mechano-active organic materials for shock wave energy dissipation
Materials capable of shock wave energy dissipation (SWED) are of interest for protecting personnel and machinery from explosions and ballistic impacts. Although current protective armors often prevent physical injuries by stopping shrapnel or bullets, the shock waves generated by explosions or …
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Experimental investigation of energy dissipation behavior of the modified friction device
… this thesis was to better understand the MFD's energy dissipation behavior. Previous investigations have studied the behavior of friction devices subject to the types of low frequency excitations but not under loads with low frequencies and small displacements. This research sought to provide …
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Friction-based control system for seismic energy dissipation with isolated stories
… or inducing counteracting forces which dissipate energy in various ways. In order to efficiently dissipate the seismic energy with existing schemes, large structural displacements are required. However, structures that are most vulnerable to earthquakes such as low-rise relatively stiff buildings, …
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Preliminary investigation of energy dissipation at culvert outlets using a riprap step
One method used to attenuate high-energy flow at culvert outlets is the construction of a riprap energy dissipator. The current riprap design used by the WVDOH experiences problems with excessive sedimentation and is only applicable at culvert outlets where the flow velocity is low. The purpose of …
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A Variable Stiffness Energy Dissipation Device for Vibration Control of Steel Frames
<p>Structures without energy dissipation devices rely primarily on plastic or inelastic deformations to dissipate energy from earthquakes. As a result, the amount of inelastic deformations and damage level will increase as the earthquake severity increases. However, structures equipped with energy …
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