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 106 for “"nonlinear behavior"”.
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The Nonlinear Behavior of a Centrifugal Pendulum
Made available in DSpace on 2014-12-12T00:25:56Z (GMT). No. of bitstreams: 1 7414587.pdf: 1317932 bytes, checksum: cd03788b8d4ba41eb3d1090f871e883a (MD5) Previous issue date: 1974
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Nonlinear behavior in the propagation of atmospheric gravity waves
… developed that would allow the simulation of the nonlinear aspects of the propagation of the waves thought to drive the global circulation of the mesosphere-gravity waves. The results from two numerical experiments are presented comparing the dynamics of gravity wave breaking in two different …
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Nonlinear behavior of reinforced concrete structures under seismic excitation
Exploring nonlinear behavior of structures through structural analysis software can be time and computer processing intensive especially with complicated structural models. This paper will explore the nonlinear behavior of a reinforced concrete structure with varying damping conditions that will …
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Pre-design estimation of reinforced concrete structures’ nonlinear behavior under the action of intensive loads
Modeling the nonlinear response of concrete and reinforced concrete (RC) structures to the effects of high-intensity loads leading to the material's compaction, fragmentation, and cracking is a complex mathematical problem. Its solution is required when designing nonstandard civil structures and …
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The Nonlinear Behavior of Stock Prices: The Impact of Firm Size, Seasonality, and Trading Frequency
… does not guarantee higher-order independence, nonlinear testing that focuses on higher-order moments of stock return distributions may reveal exploitable stock return dependencies. This dissertation fits AR models to TAQ data sampled at ten-minute intervals for 20 small-capitalization, 20 …
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Identification and Quantification of Nonlinear Behavior in a Disbonded Aluminum Honeycomb Panel using Single Degree-of-Freedom Models
… to external vibratory excitation is sought using nonlinear modeling of damping and stiffness characteristics related to the damage. Different types of damping and stiffness single degree-of-freedom models are presented with analysis of their behavior at specific harmonics of the primary resonance …
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On-line Nonlinear Characterization of Anisotropic Materials
… proposes a new framework to characterize the nonlinear behavior of anisotropic materials in an on-line manner. The proposed framework applies recursive estimation and a multi-linear model to characterize the nonlinear behavior of anisotropic materials on-line using full-field strains, which …
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Effects of imperfections on the response of composite structures with scarf joints
… have generally considered only the linear behavior of the adhesive material, although adhesive materials typically have large nonlinear capability. Finally, in studies of scarf joints, only the stress state in the adhesive tends to be considered. In this work, the stress and strain states …
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Coupled theoretical and experimental methods to characterize heterogeneous, anisotropic, nonlinear materials: application to cardiovascular tissues
… soft tissues, which exhibit markedly nonlinear behavior when operating at physiologic strain levels. Therefore, GAIM was extended to consider large-deformation kinematics, a nonlinear closed-form structural model of planar fibrous tissue mechanics was utilized to describe the nonlinear …
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Nonlinear Behaviors Analysis and Nonlinear Characteristics Diagnosing of Mechanical Vibration Systems
… understanding and effective diagnosis of nonlinear behaviors are important in dynamical analyses of mechanical systems and may provide crucial guidance to the design and control of mechanical systems. In this research, the nonlinear behavior and stability of an elastic suspended cable …
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The Role of Solvent in the Protein Dynamical Transition
… glass phase transition. It manifests itself by a nonlinear behavior in the temperature dependence of the average atomic mean-square displacements and involves an increase of the amplitude of protein dynamics. This increase in flexibility has been correlated with the onset of protein activity. In …
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Nonlinear finite element analysis of tubular joints
In this study, important aspects of nonlinear behavior of tubular joints are numerically investigated with a finite element procedure including geometric and material nonlinearities. The numerical results give a clear and convincing physical interpretation of the effects of external loads on the …
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A method of characterisation of the nonlinear vibration transmissibility of cushioning materials
… the product/cushion system can exhibit strong nonlinear behaviour. The Reverse Multiple Input-Single Output (R-MISO) approach has shown a greater ability to more accurately characterise the nonlinear package/cushion system. This greater accuracy will allow for the use of fewer materials with …
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Model-Based Vibration Diagnostic of Cracked Beams in the Time Domain
… information permits the direct inclusion of the nonlinear behavior due to crack opening-closure cycles. In addition, very little information is lost, since no signal processing or parameter identification steps are involved. The proposed method is based on a continuous model for the transverse …
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Optimal design of nonlinear framed structures under multiple loading conditions based on a stability criterion
… tool for designing complex structures with nonlinear behavior and generally leads to designs with better limit strength and stability while avoiding nonlinear analysis in the optimization cycle. The approach is indirect, but is effective and efficient.
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Geometrically nonlinear finite element analysis of space frames
… element can be used to model geometrically nonlinear behavior of space frames. The two element models are compared on the basis of their efficiency, accuracy, economy and limitations. An iterative approach, either Newton-Raphson iteration or modified Riks/Wempner iteration, is employed to …
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Center Manifold Dynamics in Randomly Coupled Oscillators and in Cochlea
… dynamics on center manifolds to display complex, nonlinear behavior and to flexibly adapt to wide-ranging sensory input parameters. In this thesis, I will present two lines of research exploring nonhyperbolicity in neural dynamics.</p>
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Detecting and Addressing Model Structural Error in Forecasting for Model Predictive Control
… has focused on how an understanding of the nonlinear behavior of models, chaos, and individual challenges predictability. A systemic approach is presented for improving model predictive strategies in uncertainties in dynamical system forecasting for decision-making. In this thesis, as a …
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Numerical Simulation of Reinforced Concrete Subjected to Multiaxial Stress Conditions
… This composite material demonstrates a highly nonlinear behavior caused by cracking, crushing, aggregate interlock, bond slip, dowel action, shrinkage and creep. Because the reinforced concrete involves so many nonlinear phenomena interacting with one another, the formulation of a "complete" …
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Analysis of metal matrix composite structures using a micromechanical constitutive theory
The nonlinear behavior of continuous-fiber-reinforced metal-matrix composite structures is examined using a micromechanical constitutive theory. Effective lamina and laminate constitutive relations based on the Aboudi micromechanics theory are presented. The inelastic matrix behavior is modeled by …
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