Results 161 to 170 of about 1,536 (218)

Enhancing the Performance of Vibration Energy Harvesting Based on 2:1:2 Internal Resonance in Magnetically Coupled Oscillators. [PDF]

Micromachines (Basel)
Dowlati S, Kacem N, Bouhaddi N.
europepmc   +1 more source

Neural signatures of stream segregation from childhood to adulthood. [PDF]

Sci Rep
Benocci E, Alain C, Calcus A.
europepmc   +1 more source

Stabilization of memory on neural manifolds through multiple synaptic time scales

Chechelnizki G, Shaham N, Salhov A, Burak Y.   +3 more
europepmc   +1 more source

Mistuning Forced Response Characteristics Analysis of Mistuned Bladed Disks [PDF]

Journal of Engineering for Gas Turbines and Power, 2010
The problem of determining the worst-case mistuning pattern and robust maximum mistuning forced response of a mistuned bladed rotor is formulated and solved as an optimization problem. This approach is exemplified on a two-degrees-of-freedom per blade disk model, two three-degrees-of-freedom per blade disk models, and a mistuned two-stage bladed rotor.
Haitao Liao, Jianjun Wang, Jianyao Yao, Qihan Li   +3 more
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Damping mistuning effect of the hard-coating-based intentional mistuning techniques on mistuned blisks and its mechanism

Aerospace Science and Technology, 2020
Abstract Intentional mistuning based on damping hard coatings can realize a combination of intentional mistuning and a substantial increase in the damping of the system, but causes damping mistuning. Aiming at figuring out the specific effects of damping mistuning, this paper conducts investigations of vibrational characteristics of mistuned blisks ...
Kunpeng Xu, , Xianfei Yan
exaly   +2 more sources

A New Mistuning Form in Periodic Structure - Force Mistuning

Advanced Materials Research, 2012
The mistuning of periodic structure was generally considered to be natural parameter mistuning, such as stiffness mistuning, damping mistuning and mass mistuning. However, in engineering practice, there was another kind of mistuning——force mistuning, which has not been studied yet.
Ai Lun Wang
exaly   +2 more sources

Optimization of Intentional Mistuning Patterns for the Mitigation of the Effects of Random Mistuning

Journal of Engineering for Gas Turbines and Power, 2014
This paper focuses on the optimization of intentional mistuning patterns for the reduction of the sensitivity of the forced response of bladed disks to random mistuning. Intentional mistuning is achieved here by using two different blade types (denoted as A and B) around the disk.
Mignolet Marc P
exaly   +2 more sources

A New Mistuning Form Existed in Periodic Structure-Force Mistuning

Applied Mechanics and Materials, 2012
The mistuning of periodic structure was generally considered to be natural parameter mistuning, such as stiffness mistuning, damping mistuning and mass mistuning. However, in engineering practice, there was another kind of mistuning—force mistuning. Based on a typical concentrated parameter model of periodic structure, the vibration characteristics ...
Ai Lun Wang
exaly   +2 more sources

Control of mistuning level using hard coating for blisks based on mistuning identification technique

Aerospace Science and Technology, 2021
Abstract Mistuning will lead to vibration localization of blisk, which seriously affects the service life of blisks. To control the mistuning level of blisks, a novel control method using hard coating is proposed. In this method, the thickness of hard coating is designed according to mistuning state of blisk substrate, so that, the mistuning level ...
Kunpeng Xu, Dongxu Du
exaly   +2 more sources

Radial-turbine mistuning [PDF]

, 2017
One of the common failure modes of the diesel engine turbochargers is high-cycle fatigue of the turbine-wheel blades. Mistuning of the blades due to the casting process is believed to contribute to this failure mode. A laser vibrometer is used to characterize mistuning for a population of turbine wheels through the analysis of the blade-response to ...
openaire   +2 more sources