Results 11 to 20 of about 123,878 (316)

Design and characteristics analysis of a new vibration reduction system for in service long span transmission tower [PDF]

open access: yesScientific Reports, 2022
The wind-induced fatigue is the main factor leading to reduction of the bearing capacity of long-span transmission towers. In order to reduce the harm of wind vibration, this paper takes the 500 kV Jiamusi region ISLSTT (in service long span transmission
Jinghua Liu   +4 more
doaj   +2 more sources

Optimal Trajectory Planning of the Variable-Stiffness Flexible Manipulator Based on CADE Algorithm for Vibration Reduction Control [PDF]

open access: yesFrontiers in Bioengineering and Biotechnology, 2021
Robotic manipulators are widely used for precise operation in the medical field. Vibration suppression control of robotic manipulators has become a key issue affecting work stability and safety. In this paper an optimal trajectory planning control method
Qiang Cheng   +4 more
doaj   +2 more sources

Hole making characteristics of novel domestic T800 carbon fiber reinforced composite

open access: yesJournal of Aeronautical Materials, 2023
In view of the defects of the new domestic T800 carbon fiber reinforced plastic (CFRP), such as lamellar tearing and fiber loss, which would be easily caused by large drilling force and torque during cutting, an experimental platform including a vertical
DONG Huimin   +6 more
doaj   +1 more source

Torsional vibration analysis of shaft with multi inertias

open access: yesScientific Reports, 2022
An analytical method is proposed to investigate the torsional vibration of the uniform circular shaft with multiple concentrated inertias. The governing equation is established based on the Hamiltonian principle and verified by the dynamical method.
Tao Peng, Qun Yan
doaj   +1 more source

Effect of ionic liquids on tribological properties of water-iubricated nitrile rubber rubber

open access: yesHecheng xiangjiao gongye, 2021
Nitrile rubber(NBR)-based composites modified with three kinds of imidazolium-based ionic liquids were prepared by mechanical mixing method. Curing characteristics, dynamic mechanical properties, physical and mechanical properties and friction ...
WANG Shan, PEI Gao-lin, SU Zheng-tao
doaj   +1 more source

A spatial evaluation method for earthquake disaster using optimized BP neural network model

open access: yesGeomatics, Natural Hazards & Risk, 2023
Rapid spatial evaluation of seismic disaster after earthquake occurrence is required in disaster emergency rescue management, because of its importance in decreasing casualties and property losses. Among many categories of seismic disaster, evaluation of
Hanxu Zhou   +3 more
doaj   +1 more source

Reduction of vibrations in blanking by MR dampers [PDF]

open access: yesCIRP Annals, 2010
The break through shock during sheet metal blanking operations generates uncontrolled high reverse loads, mechanical vibrations and loud noise that may cause problems such as fatigue cracks in the press components, premature wear in tooling and great discomfort for press operators.
GHIOTTI, ANDREA   +3 more
openaire   +4 more sources

Application progress of polymer matrix composites in civil turbofan aeroengine

open access: yesCailiao gongcheng, 2020
Polymer matrix composites (PMCs) have become one of the most important structure materials in the new generation of civil turbofan aeroengine due to their advantages of high specific strength, high specific stiffness, good designability, excellent ...
MA Xu-qiang, SU Zheng-tao
doaj   +1 more source

Low velocity impact response and post impact compression behaviour of ESTM-fabric/3266 composites

open access: yesCailiao gongcheng, 2020
A novel kind of lattice-distributed ESTM-fabrics (ES-L) and random-distributed ESTM-fabrics (ES-R) were developed by using polyethersulfone (PES) and U3160 according to ex-situ toughening technology.
DONG Hui-min   +5 more
doaj   +1 more source

Vibration Reduction Design and Performance Research of Bearing Plate of Undersea Vehicle Based on Acoustic Black Hole

open access: yes水下无人系统学报, 2023
In order to reduce the vibration energy transferred to the bearing plate of an undersea vehicle for detecting acoustic arrays, an accessory round plate structure for vibration reduction was designed based on the acoustic black hole principle.
Ruilei MA   +5 more
doaj   +1 more source

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