Results 1 to 10 of about 126,524 (167)

Analysis of Winding Vibration Characteristics of Power Transformers Based on the Finite-Element Method

open access: yesEnergies, 2018
The winding is the core component of a transformer, and the technology used to diagnose its current state directly affects the operation and maintenance of the transformer.
Xiaomu Duan   +4 more
doaj   +3 more sources

Vibration characteristics of ±800 kV converter transformers part I: Under no-load conditions

open access: yesInternational Journal of Electrical Power & Energy Systems
For lack of study on the vibration characteristics of converter transformers, this paper studied the vibration signal analysis method and investigated the vibration characteristics of converter transformers during the commissioning of a ±800 kV converter
Menghao Qian   +5 more
doaj   +3 more sources

3D seismic simulation analysis of the Longtoushan Town Basin during the 2014 Ludian earthquake, Yunnan province

open access: yesFrontiers in Earth Science, 2023
On 3 August 2014, a magnitude Ms 6.5 earthquake struck Ludian County, Zhaotong City, Yunnan Province, causing grave losses of life and property in the Longtoushan Town Basin near the fault. In this study, a three-dimensional model of the Longtoushan Town
Chengcheng Li   +7 more
doaj   +1 more source

Vibration analysis of ball bearing considering waviness under high speed and an axial load [PDF]

open access: yesBulletin of the Polish Academy of Sciences: Technical Sciences, 2020
Based on the rolling bearing vibration measurement principle in ISO standard, a nonlinear dynamic model of ball bearing is built and motion equations of the inner ring, outer ring, and rolling elements are derived by using Lagrange’s equation.
P.P Hou, L.Q. Wang, Q.Y. Peng
doaj   +1 more source

Dynamic Modeling and Vibration Characteristics Analysis of Deep-Groove Ball Bearing, Considering Sliding Effect

open access: yesMathematics, 2021
To study the vibration characteristics of deep-groove ball bearing, considering the influence of sliding, the dynamic model of the DGB 6205 system is established in this paper.
Fanjie Li, Xiaopeng Li, Dongyang Shang
doaj   +1 more source

Vibration characteristics of a floor sample [PDF]

open access: yesThe Journal of the Acoustical Society of America, 1981
Vibration tests consisting of heel impacts by a person, shaker impacts, and random shaker excitations were carried out on an 8.5 × 8.3 m steel-joist-concrete floor. Structural variations to the floor sample included edge conditions restrained and free; two slab thicknesses; changes in joist stiffness; and inclusion of transverse bracing. The lower four
Rainer, J. H., Pernica, G.
openaire   +3 more sources

Fluid–structure interaction vibration characteristics of the AFT workshop structure based on micro-vibration monitoring

open access: yes工程科学学报, 2022
An AFT oxidation fan room is a kind of composite structure of reinforced concrete structure supporting the steel tank in the desulfurization process. It is a common structural form of a power plant. The obvious vibration generated by the structure is not
Bo SONG, Bang LI, Nan XIAO, Jun LAO
doaj   +1 more source

Vibration Characteristics of Curved Beams [PDF]

open access: yes49th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference <br> 16th AIAA/ASME/AHS Adaptive Structures Conference<br> 10t, 2008
The paper presents a concise framework studying the coupled vibration of curved beams, whether the curvature is built-in or is caused by loading. The governing equations used are both geometrically-exact and fully intrinsic, with a maximum degree of nonlinearity equal to two.
Chong-seok Chang, Dewey Hodges
openaire   +1 more source

Vibration Characteristics of a Hydroelectric Generating System with Different Hydraulic-Mechanical-Electric Parameters in a Sudden Load Increasing Process

open access: yesEnergies, 2021
In a sudden load increasing process (SLIP), the hydroelectric generating system (HGS) experiences a severe vibration response due to the sudden change of the hydraulic-mechanical-electric parameters (HMEPs).
Yixuan Guo   +6 more
doaj   +1 more source

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