Results 31 to 40 of about 44,670 (307)
Computation of Aerodynamic Damping for Flutter Analysis of a Transonic Fan
, 2011 This paper describes the computational analysis of aerodynamic damping for prediction of flutter characteristics of a transonic fan stage that consists of a highly loaded rotor along with a tandem stator.
Parthasarathy Vasanthakumar +1 more
core +1 more source
Seismic structural and non-structural performance evaluation of highly damped self-centering and conventional systems [PDF]
, 2011 This paper evaluates the seismic structural and non-structural performance of self-centering and conventional structural systems combined with supplemental viscous dampers.
Karavasilis, Theodore L. +5 more
core +1 more source
Significance of low energy impact damage on modal parameters of composite beams by design of experiments [PDF]
, 2009 This paper presents an experimental study on the effects of multi-site damage on the vibration response of composite beams damaged by low energy impacts around the barely visible impact damage limit (BVID).
A Shahdin +6 more
core +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
Numerical and Experimental Study on Dummy Blade with Underplatform Damper
MachinesTo 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 +3 more
doaj +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 +9 more
wiley +1 more source
Nihon Kikai Gakkai ronbunshu, 2016 In order to analyze the blade vibration caused by flutter, it is necessary to understand both the aerodynamic damping and structural damping of the high vibration stress. Flutter Vibration mode occurring in the rated speed is non-synchronous mode.
Ryou AKIYAMA +3 more
doaj +1 more source
, 2012 Many studies have typically applied a linear structural spring–mass–damper oscillator and a van der Pol wake oscillator to model a one-dimensional cross-flow vortex-induced vibration (VIV).
Zanganeh, Hossein, Srinil, Narakorn
core +1 more source
Hysteresis damping ratio for moment steel frame evaluation using DDBD
, 2023 The main purpose of this paper is to propose a model for estimating the hysteresis damping ratio of moment steel frames and compare them with the results obtained using direct displacement-based design.
Sultan, Hussein Kareem +1 more
core +1 more source
Advanced Engineering Materials, EarlyView.This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal +2 more
wiley +1 more source