Results 31 to 40 of about 2,936,275 (293)

Evolution of the Damping Ratio Considering Cyclic Confining Pressure Under Intermittent Cyclic Loading

Buildings
The damping ratio is essential to conducting dynamic analysis for underground engineering under traffic loading. Variations in the damping ratio are usually studied using cyclic triaxial tests with continuous cyclic loading; however, intermittent loading
Juehao Huang, Chao Meng, Yongqiang Zhou, Jian Chen, Xiaodong Fu, Mingyi Wang   +5 more
doaj   +1 more source

Longitudinally Vibrating Elastic Rods with Locally and Non-Locally Reacting Viscous Dampers

Shock and Vibration, 2005
Eigencharacteristics of a longitudinally vibrating elastic rod with locally and non-locally reacting damping are analyzed. The rod is considered as a continuous system and complex eigenfrequencies are determined as solution of a characteristic equation ...
Şefaatdin Yüksel, Uğur Dalli
doaj   +1 more source

Modified Pyke's hysteretic model considering damping ratio

Yantu gongcheng xuebao, 2019
The damping ratio is a dynamic soil property that indicates the capacity of energy dissipation under cyclic loadings, and it plays an important role in dynamic response analysis of sites and soil-structure systems.
LIU Fang-cheng 1, YANG Jun 2, WU Meng-tao 1,3
doaj   +1 more source

Study on Parameters’ Influence and Optimal Design of Tuned Inerter Dampers for Seismic Response Mitigation

Buildings, 2022
In this paper, parameter analyses of a tuned inerter damper (TID) are carried out based on the displacement mitigation ratio. The optimal design of TID based on the closed-form solution method is carried out and compared with the fixed-point method ...
Ruoyu Zhang, Jizhong Huang, Meigen Cao, Qingyang Luo, Xiuwei Guo   +4 more
doaj   +1 more source

Numerical and Experimental Study on Dummy Blade with Underplatform Damper

Machines
To confirm the variation in damping ratio offered by dry friction dampers against structural vibration stress, this study developed a blade vibration response test system for capturing damping characteristic curves through both frequency sweep excitation
Di Li, Chenhong Du, Hongguang Li, Guang Meng   +3 more
doaj   +1 more source

An Investigation on the Damping Ratio of Marine Oil Slicks in Synthetic Aperture Radar Imagery

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023
The damping ratio has recently been used to indicate the relative internal oil thickness within oil slicks observed in synthetic aperture radar (SAR) imagery.
Cornelius Quigley, A. Malin Johansson, Cathleen E. Jones   +2 more
doaj   +1 more source

Integrating damping and non-linearities in a vibration design process [PDF]

, 2013
Classical vibration design uses modes and transfer functions generated with the superposition principle to allow the verification of design objectives.
BALMES, Etienne
core  

A study of joint damping in metal plates [PDF]

, 2009
For satellite applications the determination of the correct dynamic behaviour and in particular the structural damping is important to assess the vibration environment for the spacecraft subsystems and ultimately their capability to withstand the launch ...
Cunningham, Paul, Aglietti, GS, Walker, SJI, Cunningham, P, Aglietti, Guglielmo S., Walker, Scott J.I.   +5 more
core   +1 more source

Peripheral Neutrophil Activation and Extracellular Trap Formation in Amyotrophic Lateral Sclerosis

Annals of Clinical and Translational Neurology, EarlyView.
Markers of neutrophil activation are increased in plasma during ALS, and markers of NET formation associate with ALS survival. ABSTRACT Objectives Peripheral neutrophil levels in amyotrophic lateral sclerosis (ALS) inversely correlate with survival, suggesting a role for neutrophils in disease progression.
Lillia A. Baird, Haley McQuown, Jihyun Park, Samuel J. Teener, Ian F. Webber‐Davis, Andrew D. Carter, Dae‐Gyu Jang, Eva L. Feldman, Stephen A. Goutman, Benjamin J. Murdock   +9 more
wiley   +1 more source

Observer‐Based Adaptive Event‐Triggered Tracking Control for Fuzzy TS Systems With Premise Mismatch

International Journal of Adaptive Control and Signal Processing, EarlyView.
This paper presents an adaptive logistic event‐triggered observer‐based tracking controller for Takagi‐Sugeno fuzzy systems under constrained inputs and network delays. Leveraging a hybrid LMI and Secretary Bird Optimization approach, this strategy significantly minimizes communication overhead and computational burden while ensuring optimal reference ...
Oussama Djadane, Salama Makni, Mourad Kchaou, Ahmed El Hajjaji   +3 more
wiley   +1 more source