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 14 of 14 for “"vibration mitigation"”.
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Thermally tunable band gaps in architected metamaterial structures
… however applications that require structural vibration mitigation such as spacecraft and automotive components have variable vibration mitigation requirements over a range of operation and external conditions. In this work, we propose a method to thermally tune the band gaps of composite …
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Application of smart materials for vibration reduction in ships
… industries to measure and control noise and vibration. This study covered ship structure vibration and Smart Materials were employed for the purpose of ship vibration attenuation. One specific Smart Material, piezoelectric material, was the focus of the study. Although previous research has …
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Multi-resonant Electromagnetic Shunt in Base Isolation for Vibration Damping and Energy Harvesting
… to effectively mitigate the earthquake induced vibrations of low- or mid-rise buildings, and at the same time to efficiently harvest utility-scale energy by using an optimally configured multi-resonant electromagnetic shunt in base isolation. In this research, two multi-resonant shunt …
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Cyber-Physical Codesign of Wireless Structural Control System
… provide an attractive alternative for structural vibration mitigation. Although wireless control systems have advantages of flexible installation, rapid deployment and low maintenance cost, there are unique challenges associated with them, such as wireless network induced time delay and potential …
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Towards A Mobile Damping Robot For Vibration Reduction of Power Lines
… against harsh environments such as wind-induced vibration (WIV). Currently, Inspection robots are used for maintenance efforts while fixed tuned mass dampers (FTMDs) are used to prevent structural damages. However, both solutions are facing many challenges. Inspection robots are limited by their …
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Intelligent Monitoring of Powerline Vibrations - Sparse Sensing and Predictive Modeling Approach
Wind-induced vibrations (WIV), particularly Aeolian vibrations, pose a persistent threat to the structural integrity and operational lifespan of overhead power transmission lines. Traditional mitigation strategies, such as passive dampers, often lack adaptability to changing environmental …
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Engineering, characterization, identification and reduced order modeling of systems with softening nonlinearities
… it has been shown that, for instance, in vibration mitigation applications, nonlinear dynamical systems can yield improved performance compared to their linear counterparts. Accordingly, the first part of this thesis focuses on theoretical and experimental modeling and characterization of …
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Investigation of a Mobile Damping Robot for Electric Transmission Lines
… suffer from many hazards, including wind-induced vibrations (WIV), which can lead to fatigue failure of the transmission conductors. Current vibration mitigation methods do not adequately address WIV because they overwhelmingly rely on narrow-band fixed absorbers. A mobile damping robot (MDR) can …
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Effects of geometry on static and band gap properties of 3D printed metastructures
… frequency ranges. The enhanced static and vibration properties of architected metamaterials make them ideal candidates for multi-functional purposes. In this paper, we take inspiration from the mass-efficient static behavior of different lattice geometries to fully explore the capabilities …
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A Study on the Dynamic Characterization of a Tunable Magneto-Rheological Fluid-Elastic Mount in Squeeze Mode Vibration
… to develop a mount capable of mitigating input vibrations of varying magnitudes and frequencies depending on electromagnetic flux. Various mechanical components are synthesized into a dynamic testing rig in order to extract vibrational characteristics of the mount and to compare it with existing …
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Modal Analysis of Axisymmetric Structures using Zernike Polynomials and Machine Learning
… mobility has amplified the need for advanced vibration analysis to control noise in both electric cars and aircraft. In vehicles, tire-induced vibrations have become a significant contributor to cabin noise, making an understanding of tire mode shapes crucial for effective vibration …
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A Novel Framework for Modeling Reconfigurable Dynamic Systems
… superior ride comfort and minimizing noise and vibration levels is paramount. This is especially critical for electric vehicles (EVs), where predicting road noise presents unique challenges due to the added weight of battery packs. This thesis introduces a Generalized technique to incorporate …
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A performance-based design framework for base-isolated buildings against ground-borne vibration
\noindent Ground-borne vibration in buildings is a recurrent design concern for new developments in the vicinity of surface or underground railways, a common question being whether or not a building necessitates some form of vibration mitigation. This question is commonly tackled by comprehensive …
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Study on Bandgap Manipulation and Structural Vibration Control in Sandwich Metastructures
… exposed to problematic medium- and low-frequency vibrations induced by operational loads, environmental disturbances, and earthquakes. Although conventional vibration isolation and mitigation methods have been widely used, they still face limitations in broadband control of medium- and …