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Showing 1 to 20 of 26 for “"relative displacement"”.
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Dynamic Analysis of Semi-Active Control Techniques for Vehicle Applications
… skyhook policies were also considered, namely displacement skyhook and relative displacement skyhook. As well as exploring the relative benefits of each of these controllers, the performance of each semi-active controller was compared to the performance of conventional passive damping. Each …
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A procedure to facilitate testing of a two-sided composite null hypothesis about the mean of a normally distributed random variable
… to permit testing of hypotheses about the relative displacement of the coefficient of variation from zero.
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Glacial isostatic adjustment and relative sea level change over the last earthquake cycle in upper Cook Inlet, Alaska, USA
… in south central Alaska. Reconstructions of relative sea level change over the last 900 years, based upon extensive lithological, biostratigraphical and chronological investigations of salt marsh sequences in upper Cook Inlet, Alaska, record changes in marine influence and the direction of …
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Geotechnical Technique To Strengthen Traditional I-Walls Through The Use Of Composite Material
… loading conditions and ultimately lowered the relative displacement of adjacent I-walls. The major findings were that the fiber orientation, thickness, and length, coupled with the application method of the material, played a major role in the structural integrity of the cap. Observations …
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A pneumatic semi-active control methodology for vibration control of air spring based suspension systems
… controller.</p> <p>The third controller uses a Relative Displacement solution to generate the ideal tracking signal, along with a Set-Point plus PI tracking controller. The LQI controller is used (offline) to aid in setting the gain on the Relative Displacement controller. This controller is …
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A vibration analysis of a bearing/cartridge interface for a fretting corrosion study
The relative motion between a ball bearing outer race and the bearing's cartridge was investigated. The investigation was part of a larger program, the objective of which is to examine the important parameters influencing fretting corrosion in rolling element bearings. The bearing examined was a …
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Molecular Dynamics Study of Microstructural Evolution in Alloys Subjected to Severe Plastic Deformation
… during deformation, as well as quantifying the relative contributions of these mechanisms. It is found that the glide of dislocations plays a more important role than previously thought in accommodating plastic deformation in nanocrystalline alloys. A new property of the atomic mixing by plastic …
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Dynamics of the double layer at the polarizable mercury-electrolyte interface
… acceleration of the mercury drop and not on the relative displacement of this drop with respect to the capillary wall. The dependence of the output voltage on the acceleration of the mercury drop is opposite to that of the velocity.
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Analysis of molecular conformations using relative planes
… research an innovative approach to calculate the relative displacement and orientation of every possible pair of rings in a given molecule was designed, tested, and implemented in the "Planes" program. Planes were defined from each of the ring substructures and the displacement and rotation of one …
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Seismic response analysis of multiply connected secondary systems
… The pseudo-static part is due to the relative displacement between supports, and the cross part takes into account the correlation between these two parts of the response. The seismic input in this approach is defined in terms of the auto and cross pseudo-acceleration and relative …
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Numerical Analysis on Seismic Response of Cantilever Retaining Wall Systems and Fragility Analysis on Motion Response
… during the earthquake were also considered. The relative displacement of the walls with various backfill cohesions, under different ground motions, and free-field PGAs were investigated. Current analytical and empirical correlations developed based on Newmark sliding block method for estimating …
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A low cost, DC-coupled active vibration isolation system
… mounts for improved force disturbance rejection relative to passive optical tables.Force disturbance rejection and position alignment are two major functional requirements of vibration isolation systems. With conventional passive isolation systems, a tradeoff exists between improving force …
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Theoretical study of carbon nanotubes adsorbed on the silicon (100) surface and explorations on the modulation of conductance for metallic carbon nanotubes
… also been investigated. Spectral data indicate a relative displacement, depending on the type of doping, of the surface's band edges from those of adsorbed nanotubes, and this is confirmed by the ab initio calculation of semiconducting nanotubes on the Si(l00):H-2xl surface. A markedly different …
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Machine Learning from Computer Simulations with Applications in Rail Vehicle Dynamics and System Identification
… between model inputs, such as the suspension relative displacement and velocity, and the output, for example, sum of suspension forces. Computational efficiency of Multibody Dynamics (MBD) models can be improved by replacing their computationally-intensive subsystems with stochastic …
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Development of Broadband Time-Resolved Spectroscopy and Investigation of the Dynamics of Photoexcited Carriers and Lattice Excitations in Chiral Weyl Semimetals
… resolution, while also being sensitive to relative changes in reflectivity as low as ΔR/R ~ 10^(-4). A more conventional broadband pump-probe technique was applied to the chiral Weyl semimetal RhSi (S.G. 198) with the aim of investigating the dynamics of chiral single particle excitations …
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Application of image analysis techniques to determine strain distribution in leather
… A system was developed which could determine the relative displacement of marked spots along the gauge length of the sample using images captured during a uni-axial, bi-axial or multi-axial tensile test. The separation of the marked spots along the direction of applied stroke allowed the …
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Shock isolation using switchable stiffness
… of response parameters such as the absolute and relative displacement and absolute acceleration. The single degree-of-freedom system is considered as a benchmark for comparison. The issue of residual vibration suppression is then presented. For the latter a different switchable stiffness strategy …
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Fermi Mixtures: Effects of Engineered Confinements
… we investigate the polarization produced by the relative displacement of the potentials trapping two spin species of a unitary Fermi gas with population imbalance. We investigate the dipole polarizability of a polarized system both in the two-fluid and the three-fluid model at zero temperature …
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Dynamic Deformation and Mechanical Properties of Brain Tissue
<p>Traumatic brain injury is an important medical problem affecting millions of people. Mathematical models of brain biomechanics are being developed to simulate the mechanics of brain injury and to design protective devices. However, because of a lack of quantitative data on brain-skull boundary …
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Design, Modeling and Tests of Electromagnetic Energy Harvesting Systems for Railway Track and Car Applications
… the wedge suspension, to use the small amount of relative displacement at the wedge suspension to harvest energy. A second harvester is placed on a test track to use the vertical motion that occurs due to passing wheels for wayside energy harvesting. Both onboard and wayside tests confirm the …
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