Results 21 to 30 of about 14,198 (266)

Magnetic suspension motorized spindle-cutting system dynamics analysis and vibration control review

open access: yesJournal of Hebei University of Science and Technology, 2016
The performance of high-speed spindle directly determines the development of high-end machine tools. The cutting system's dynamic characteristics and vibration control effect are inseparable with the performance of the spindle,which influence each other,
Xiaoli QIAO
doaj   +1 more source

Development of a Flexible Lightweight Hydraulic-Pneumatic Flywheel System for Wind Turbine Rotors

open access: yesFluids, 2020
In this paper, the design of a flexible piston accumulator for application in a hydraulic-pneumatic flywheel system in a wind turbine rotor is presented.
Laurence Alhrshy   +2 more
doaj   +1 more source

Calculation method for natural frequency of rotors considering load distribution in stepped parts

open access: yesNihon Kikai Gakkai ronbunshu, 2022
To improve the product performance of turbomachinery and ensure vibration reliability, we propose a method for predicting natural frequencies that considers the decrease in the stiffness of the rotor stepped part.
Kazuyuki YAMAGUCHI   +2 more
doaj   +1 more source

Stochastic modeling of flexible rotors [PDF]

open access: yesJournal of the Brazilian Society of Mechanical Sciences and Engineering, 2012
Flexible rotors are characterized by inherent uncertainties affecting the parameters that influence the dynamic responses of the system. In this context, the handling of variability in rotor dynamics is a natural and necessary extension of the modeling capability of the existing techniques of deterministic analysis.
Koroishi, Edson H.   +3 more
openaire   +3 more sources

Protocol for quantifying miRNA trafficking across the endosomal membrane

open access: yesFEBS Open Bio, EarlyView.
An in vitro protocol measures miRNA uptake into endosomes isolated from mammalian cell extracts, which are free of subcellular contaminants. Performed at 37 °C in the presence of ATP, it ensures the import of single‐stranded miRNA into the endosomal lumen.
Syamantak Ghosh   +2 more
wiley   +1 more source

An Investigation of Vibrations of a Flexible Rotor System with the Unbalanced Force and Time-Varying Bearing Force

open access: yesChinese Journal of Mechanical Engineering
Unbalanced force produced by the unbalanced mass will affect vibrations of rotor systems, which probably results in the components failures of rotating machinery.
Yajun Xu   +3 more
doaj   +1 more source

Numerical and Experimental Study on the Multiobjective Optimization of a Two-Disk Flexible Rotor System

open access: yesInternational Journal of Rotating Machinery, 2017
With the ever-increasing requirement for the thrust to weight ratio, the rotational speed of modern aeroengine is increasingly improved; thus most of the aeroengine rotor is flexible.
Zheng Longxi   +2 more
doaj   +1 more source

Optimization of the Production of Rubber Compounds Using Mathematical Models

open access: yesAdvanced Engineering Materials, EarlyView.
Rubber compounds were mixed in a batch internal mixer, and symbolic regression was used to derive mathematical models linking recipe and process parameters to ram path, torque, and mixing quality (incorporation, dispersion, distribution). Subsequent optimization with evolutionary algorithms identified operating conditions that reduce specific energy ...
Anke Bardehle   +7 more
wiley   +1 more source

Experimental study of coupled shaft bending - blade umbrella mode vibration of a turbine rotor model

open access: yesNihon Kikai Gakkai ronbunshu, 2014
This paper describes an experimental study on the characteristics of blade-shaft coupled bending vibration of a rotor system with a bladed disk. In a rotor with relatively long blades such as low-pressure steam turbines, the coupled vibration of shaft ...
Takeshi KUDO   +5 more
doaj   +1 more source

Molecular Adsorbing Host•Guest (MAHG) Crystals: A New Paradigm for Porous Materials?

open access: yesAdvanced Functional Materials, EarlyView.
Networking! Introduction of guest molecules in macrocycles before crystallization profoundly influences the material obtained in terms of structure and function. Beside simplicity and porous space improvement, this approach is endowed with a huge potential given the myriad of potential guest molecules that can be used to tune this burgeoning class of ...
Ingrid Suzana   +4 more
wiley   +1 more source

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