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6241
A Method for Quantitative Evaluation of Seismic Stability of Loess Slope Based on the Shaking Table Model Test
Published 2021-01-01“…Based on first-order natural frequency and damping ratio extracted from the TF spectrum curve, a calculation method for the stability factor Fs of loess slope based on the shaking table model test is proposed, and the stability factors of loess slope under the action of different seismic ground motion would be quantitatively calculated. …”
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6242
Inertial Memory Effects in Molecular Transport Across Nanoporous Membranes
Published 2025-01-01“…It has been demonstrated that both causal models, one with exponentially fading inertial memory and the other with power-law fading memory, predict that the concentration perturbation propagates as a damped wave, leading to an increased time required for the cumulative amount of molecules passing through the membrane to reach a steady state compared to the classical model. …”
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6243
Parameter Optimization of a Vertical Spring-Viscous Damper-Coulomb Friction System
Published 2019-01-01“…If the structure is very sensitive to the acceleration response, a low friction parameter, a small spring constant, and a small and even zero damping constant could be adopted to yield a small peak acceleration of system. …”
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6244
Distributed cooperative secondary frequency control for power system penetrated with renewable energy sources and energy storage with communication time delays
Published 2025-03-01“…The increasing penetration of renewable energy sources in power systems presents frequency stability challenges, as power electronic-connected sources like photovoltaics and batteries inherently provide limited inertia and damping for frequency regulation. To address this issue, this paper proposes a distributed cooperative control method for secondary frequency regulation. …”
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6245
Point of Common Coupling Voltage Modulated Direct Power Control of Grid-Tied Photovoltaic Inverter for AC Microgrid Application
Published 2023-01-01“…The proposed PCC voltage modulated (PVM) theory-based DPC method (PVMT-DPC) is composed of nonlinear PVM, nonlinear damping, conventional feedforward, and feedback PI controllers. …”
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6246
Dynamic Characteristics of Electrostatically Actuated Shape Optimized Variable Geometry Microbeam
Published 2015-01-01“…Finally, for more consideration, different residual stress, squeeze-film damping, and fringing effect models are introduced into the governing equation of motion and we compare the corresponding dynamic response.…”
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6247
Analysis of Stationary Random Responses for Non-Parametric Probabilistic Systems
Published 2010-01-01“…In this paper, the random uncertainties of the mass, damping and stiffness matrices in a finite element model are replaced by random matrices, and a highly efficient pseudo excitation method for the dynamic response analysis of non-parametric probability systems subjected to stationary random loads is developed. …”
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6248
Analytical Simulation of 3D Wind-Induced Vibrations of Rectangular Tall Buildings in Time Domain
Published 2022-01-01“…The Monte Carlo simulation method for along-wind loads on tall buildings performed in the time and space domain may be the only analytical viable option for specific problems such as nonlinearity behavior, nonclassically damping, and detailed structural models in commercial software. …”
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6249
Optimal Coordination of TCSC and PSS2B Controllers in Electric Power Systems Using MOPSO Multiobjective Algorithm
Published 2022-01-01“…., ITAE, FD, maximum deviation range, and the required time for power oscillation damping in hybrid control systems, have been obtained. …”
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6250
Analysis on Aircraft Brake Squeal Problem Based on Finite Element Method
Published 2017-01-01“…Afterwards, a ring-shaped layer of viscoelastic damping material is constrained to outer margin of the stator to restrain the unstable modal. …”
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6251
State of the Art in Automated Operational Modal Identification: Algorithms, Applications, and Future Perspectives
Published 2025-01-01“…Automated modal identification plays a crucial role in structural health monitoring (SHM) by extracting key modal parameters such as natural frequencies, damping ratios, and mode shapes from vibration data. …”
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6252
Experimental and Numerical Investigations of Surge Extension on a Centrifugal Compressor with Vaned Diffuser Using Steam Injection
Published 2017-01-01“…Test results also indicated that steam injection not only damps out prestall waves, but also changes prestall modes and traveling direction. …”
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6253
Analytical monodromy matrix method for small-signal stability analysis of grid-connected modular multilevel converter systems
Published 2025-03-01“…On this basis, the participation factor analysis and damping ratio analysis can be performed to gain insightful characterization of system dynamics. …”
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6254
Residual Strain Monitoring and Dynamic Characteristics of Hybrid Hollow Square Tube with Metal–FRP–Metal Sandwich Walls
Published 2022-01-01“…The results showed that the damping of the hybrid HST is 586% higher than that of the steel HST, while the hybrid HST has a lower first natural frequency (4.6% reduction) and mass (15.9% weight reduction). …”
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6255
Active Vibration Control of Helicopter Maneuvering Flight Using Feedforward-Robust Hybrid Control Based on Reference Signal Reconstruction
Published 2021-01-01“…When feedback controller designed by H∞ theory is implemented, active damping is added on the secondary path to weaken the adverse effects of its sudden changes in maneuvering flight state. …”
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6256
Electronic Structure of Single-Wall Silicon Nanotubes and Silicon Nanoribbons: Helical Symmetry Treatment and Effect of Dimensionality
Published 2013-01-01“…Gap of SWSiNTs is modulated by fold number of particular tubular rotational axis symmetry and exhibits an oscillatory-decreasing character with increase of the tube diameter. Oscillations are damped and gap decreases toward 0.33 eV for tube diameter ≈116 Å. …”
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6257
Structural Safety Analysis Based on Seismic Service Conditions for Butterfly Valves in a Nuclear Power Plant
Published 2014-01-01“…A larger stress of 183 MPa was induced when we used a CQC method with a design response spectrum that uses 2% damping ratio. These values were lower than the allowable strength of the materials used for manufacturing the butterfly valve, and, therefore, its structural safety met the KEPIC MFA requirements.…”
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6258
Analysis and Optimization of the Vibration and Noise of a Double Planetary Gear Power Coupling Mechanism
Published 2018-01-01“…Then, the radiating noise characteristics of the housing and the acoustic contribution of each panel are analysed. Finally, the free damping structure and new stiffener structure are adopted to optimize the rear end cover of the housing. …”
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6259
Inkjet Printed Planar Coil Antenna Analysis for NFC Technology Applications
Published 2012-01-01“…This allows the removal of the typical damping resistance present in current NFC inductors. …”
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6260
Use-Case-Dependent Modeling Approach for Analysis of Distributed DC Grids
Published 2025-01-01“…Discrepancies arise from an insufficient modeling of the system's damping elements. These differences however fall within acceptable error margins, especially in the context of system stability analysis. …”
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