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Showing 1 to 13 of 13 for “"Nonlinear oscillations."”.
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Nonlinear oscillations under multifrequency parametric excitation
… excitation and weak quadratic and cubic nonlinearities is investigated. The method of multiple scales is used to carry out a general analysis, and three resonance conditions are considered in detail. First, the case in which the sum of two excitation frequencies is near two times a …
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Nonlinear oscillations in high power systems
The main topic of this work is to investigate on nonlinear phenomena affecting high power systems and on the strategies adopted to model them. In the first chapter the attention is focused on two big areas of high power systems: power electronics and systems/devices used to sustain plasma fusion. …
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Nonlinear Oscillations in a Second Order System
Made available in DSpace on 2014-12-08T22:23:28Z (GMT). No. of bitstreams: 1 6408427.pdf: 2781830 bytes, checksum: 4cb3490c36a83bc9cb838c5a7b958ebd (MD5) Previous issue date: 1964
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Microwave response of nonlinear oscillations in resistively shunted superconducting nanowires
… devices (SQUIDs) rely on the modulation of nonlinear dynamics in Josephson junctions for functionality. More recently, however, superconducting devices have been developed based on the switching and thermal heating of nanowires for use in fields such as single photon detection and digital …
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Nonlinear oscillations of self-excited systems under multifrequency parametric excitation
A self·excited system with weak nonlinearities and multifrequency parametric excitation is investigated in this study. The method of multiple scales is used to analyze the system under four different resonances relating parametric excitation frequencies with the natural frequencies. In the first …
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Prediction of snap-through instability under harmonic excitation
… harmonic excitation of systems undergoing nonlinear oscillations. The method is based on the total energy approach which limits the system responses within a region bounded by a critical total energy in the phase space. Three one-degree-of-freedom nonlinear systems are investigated. Their …
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A New Method to Predict Vessel Capsizing in a Realistic Seaway
A recently developed approach, in the area of nonlinear oscillations, is used to analyze the single degree of freedom equation of motion of a oating unit (such as a ship) about a critical axis (such as roll). This method makes use of a closed form analytic solution, exact upto the rst order, and …
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Nonlinear Dynamics of Electrostatically and Magnetically Actuated MEMS
… The simulation tool is used to explore new nonlinear dynamic properties of electrostatic MEMS devices in this work. Complex nonlinear oscillations and the period doubling route to chaos are observed under superharmonic excitations. The presence of U-sequence in MEMS is reported for the first …
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Hierarchical Fuzzy Control of the UPFC and SVC located in AEP's Inez Area
… Simulations have revealed the occurrence of nonlinear interactions between the machines resulting in stable limit cycles, nonlinear oscillations undergoing period doubling leading to chaos and possible voltage collapse. The proposed fuzzy scheme provides a fast, simple and effective way to …
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Advantageous Utilization of Nonlinear Phenomena in Micro-Structures and Macro-Structures: Applications to Micro-Resonators and Atomic Force Microscopy
Within this work, the nonlinear oscillations of various beam-like structures are studied. Methods are developed to analyze systems of this type to better understand their behavior in order to utilize the nonlinear phenomena associated with them and to provide insights for device development. The …
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Vibration analysis of cracked aluminium plates
… famous books, ‘Perturbation Methods’ (1974) and ‘Nonlinear Oscillations’ (1979, with D.T.Mook), and also by J.Murdock (1990), and M.P.Cartmell et al. (2003) and has been shown to be immensely useful for a wide range of nonlinear vibration problems. In this work it is shown that different boundary …
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NONLOCAL AND NONLINEAR EFFECTS ON SOLAR OSCILLATIONS (RADIATIVE DAMPING, LIMB DARKENING).
… and thermal driving due to global solar oscillations. It was discovered that the coupling of thermal and mechanical modes was very important in reconciling theoretical predictions of the expected change in the solar limb due to solar oscillations and experimental observations of the …
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Oscillatory shear in strain and stress: reduced metrics, first measurements, and linearity limits
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2024-03-01 without embargo terms