Results 11 to 20 of about 5,812 (264)

Influence of Weak Structural Vibrations on a Machine-Driven Chain of Mechanical Oscillators with Friction under Varying Normal Forces

open access: yesMachines, 2023
This work presents a real mechatronic system consisting of coupled inertia oscillators affected by relatively high-frequency structural vibrations. The system’s basic mathematical description is also provided.
Paweł Olejnik
doaj   +1 more source

Application of Vibration Signal Processing Methods to Detect and Diagnose Wheel Flats in Railway Vehicles

open access: yesApplied Sciences, 2021
This paper studied two useful vibration signal processing methods for detection and diagnosis of wheel flats. First, the cepstrum analysis method combined with order analysis was applied to the vibration signal to detect periodic responses in the ...
JaeSeok Shim   +3 more
doaj   +1 more source

Design of Laboratory Dynamic Balancing Device and Investigation of Vibrations of Rotating Bodies

open access: yesJournal of Engineering Technology and Applied Sciences, 2021
The rotor part to be balanced is mounted on the balancing device using a suitably designed fixture. When the rotor is rotated around its own axis, static and dynamic unbalance in the rotor, static and dynamic bending, which are simple harmonic movements in nature, cause oscillating motion.
Hasan SERDAR, Ziya ÖZÇELİK
openaire   +3 more sources

Breakage Monitoring of Executive Body Cutters in Continuous Miner According to Mechanical Vibration Parameters. Part 1. Research Methodology

open access: yesНаука и техника, 2022
Vibromonitoring is the most methodologically developed and technically equipped with recording tools and data processing approach. However, in the sources of scientific and technical information about mining it is presented much less than other ...
V. K. Sheleg   +2 more
doaj   +1 more source

Three-body QED test and fifth-force constraint from vibrations and rotations of HD+ [PDF]

open access: yesPhysical Review Research, 2021
We present a parts-per-million test of quantum electrodynamics (QED) in the HD^{+} molecular hydrogen ion, improving on previous tests based on vibrational and rotational transitions by factors of 76 and 1.4, respectively. The test is performed following a unified statistical approach that also produces improved constraints on physics beyond the ...
Germann, M.   +8 more
openaire   +4 more sources

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

Dynamics Analysis of Rotating Cantilever Beams with Free End Mass

open access: yesApplied Sciences, 2022
An improved modeling method for the dynamics analysis of rotating cantilever beams with free end mass is introduced. The proposed improved modeling method is based on the nonlinear Green strain theory in this study.
Xiaokang Du   +4 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

Vibration Minimisation of Moving Flexible Slender Structures Based on Time-Parameterised B-Spline

open access: yesVibration, 2023
Vibration mitigation of moving flexible structures is a key issue in many applications. Examples include antennas, solar arrays, radar reflectors, and manipulator arms, especially in the aerospace sector.
Marco Riboli   +4 more
doaj   +1 more source

Breakage Monitoring of Executive Body Cutters in Continuous Miner According to Mechanical Vibration Parameters. Part 2. Methodology for Creating a System for Mobile Monitoring of Cutter Breakages According to the Parameters of Mechanical Vibrations of the Gearbox with Natural Frequency

open access: yesНаука и техника, 2022
The development of research in the field of creating a mobile monitoring system for diagnosing the technical condition of mining equipment in terms of mechanical vibration parameters is one of the most science-intensive areas.
V. K. Sheleg   +2 more
doaj   +1 more source

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