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Showing 1 to 11 of 11 for “"hysteresis phenomenon"”.
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On the stability of rotor bearing systems based on Hopf bifurcation theory
… is presented for predicting the occurrence of a hysteresis phenomenon, which is observed in experimental results dealing with the instability of rotor-bearing systems. It is shown that the existence of hysteresis phenomenon is dependent on the system's operating parameters. To this end, the …
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Analysis for Taylor vortex flow
… the critical wavenumber ß<sub>er</sub> This phenomenon is called wave selection. In this work, several high-order perturbation methods and a numerical method are established. Both evolution and steady state of the How caused by single or several disturbances are studied. The existence of …
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Investigating the Properties and Existence of a Macroscopic Fundamental Diagram for Arterial and Freeway Traffic Systems
… MFD is not well defined in freeway networks as hysteresis effects are present. The hysteresis phenomenon in network is investigated at different levels of the network and it is found out that the heterogeneity of the network and the hysteresis in the individual detectors should account for this …
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Moisture redistribution in screeded concrete slabs
… achieved under flooring respectively. The hysteresis phenomenon of the sorption isotherm is considered in the model. The model is well suited for estimations of the future RH underneath flooring in a screeded concrete slab and may also be used on homogenous slabs.
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Convection in a differentially heated rotating spherical shell of Boussinesq fluid with radiative forcing
… turning point. Our main result is in regards to hysteresis phenomenon that is associated with transition from one to multiple convective cells, in a dfferentially heated, co-rotating spherical shell. In particular, we find that hysteresis can be observed without transition from one to multiple …
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Nonlinear electromagnetic-thermal modeling using time domain finite element method in the machinery design
… curves from experimental data. To include the hysteresis phenomenon in hard ferromagnetic materials, the Jiles-Atherton (J-A) model is introduced to characterize the nonlinear property in which an ordinary differential equation (ODE) relates the magnetic flux density with its corresponding …
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Simulation, Modeling, and Characterization of the Wakes of Fixed and Moving Cylinders
… motion affect the response curves and the hysteresis phenomenon. We studied in detail the effect of the in-line motion on the wake and related this effect to the reduction in the lift and mean drag due to a synchronization type that is very different from the one due to cross-flow motion.
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Essays on Applied Microeconomic Theory
… oil prices in 1986. There are price and quantity hysteresis in the second model. The price hysteresis has two implications. First, the price path when the demand increases might be different from the price path when the demand decreases. This in turn implies that a temporary shock in the demand …
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Graded ferroelectric devices: the dielectric analogues of semiconductor diode junctions
… and that the field dependence of the observed hysteresis offset is as predicted from theory. Homogeneous thin films of BaxSr1-xTiO3 (x=0.7, 0.8, 0.9, and 1.0) were prepared by metallorganic decomposition (MOD). The relative permittivity, dissipation, polarization, resistivity, and grain size …
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Redistribution of moisture and ions in cement based materials
… the humidity achieved under the flooring. The hysteresis phenomenon of the sorption isotherm is considered in the model. The model is well suited for estimations of the future RH underneath flooring in a screeded concrete slab and may also be used on homogeneous slabs. Results from previous …
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Dinámica de osciladores aeroelásticos
… Transverse galloping is an aeroelastic phenomenon which is due to the destabilizing nature of the aerodynamic forces associated with small oscillations in the structure. Generally, the residence time is small compared with the characteristic time scale of oscillation and the cuasi-static …