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 10 of 10 for “"Hysteretic Systems"”.
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Analysis of Hysteretic Systems: Preisach Formalism and Bouc-Wen Modeling
The inherently nonlinear phenomenon of hysteresis is notoriously difficult to model. Of notable interest are the inverse models of hysteresis which identify the parameters of a particular model to closely match experimental data. Two major models of hysteresis are the Preisach and Bouc-Wen models. …
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Differential and numerical models of hysteretic systems with stochastic and deterministic inputs
… In this work stochastically driven closed loop systems with hysteresis type memory are studied. This type of system is presented as a possible stochastic counterpart to deterministic models in the areas of economics, finance, terrestrial hydrology and biology. Some price dynamics models are …
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Analysis of Memristor Hysteretic Systems: A Hybrid Coupled Model with emphasis on Pinching/Degrading Behavior
… model that accurately captures the asymmetric hysteretic behavior of memristive devices exhibiting self-crossing hysteresis loops. The proposed model combines the Bouc-Wen Baber-Noori model with other non-linear elements in the resistive switching process. Existing models for memristive …
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The Proteretic Hopfield Neural Network Analog to Digital Converter
… reverse hysteresis, improves upon the speed of hysteretic and non hysteretic systems without compromising the accuracy.
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Stochastic Analysis of Seismic Safety Against Liquefaction
… as a problem of random vibration of nonlinear-hysteretic systems. The random vibration results lead to the determination of the mean and standard deviation of the strong-motion duration of a random seismic loading with a given intensity that causes liquefaction. These statistics are used to …
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Ground states in artificial spin ice
… that are used to experimentally model Ising spin systems. It has been successfully used to understand the behavior of frustrated spin systems, particularly the class of magnetic pyrochlore oxides known as spin ice. Here I describe a series of experimental studies that further extend the usefulness …
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Seismic response of structures with Coulomb damping
… are compared with those of the base sliding and hysteretic systems. Non-dimensional design parameters defined in terms of the corresponding elastic design spectra are introduced for design purposes and for a consistent presentation of the results. Methods for predicting the important response …
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History Induced Critical Scaling in Disordered Media and Super Diffusive Growth in Highly Advective Random Environments
The behavior of non-equilibrium systems in the presence of quenched random disorder is studied. In noisy, hysteretic systems, the role of driving force history is studied in the context of the non-equilibrium, zero-temperature Random Field Ising Model (RFIM). The RFIM was originally developed as a …
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Stochastic dynamic response of wood structural systems
… mechanisms of wood joints and structural systems must be known and the hysteretic behavior modeled properly. This dissertation presents a general hysteresis model for wood joints and structural systems, based on a modification of the Bouc-Wen-Baber-Noori (BWBN) model. The hysteretic …
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Constitutive Modeling of Friction in Bolted Connections
Bolted joints are ubiquitous in mechanical engineering, requiring accurate models to optimize designs. However, the exact nature of frictional contact between components is unknown and poses a significant challenge to modeling the nonlinear vibration of assemblies. This thesis applies empirical and …