Results 251 to 260 of about 14,554 (295)

Dynamic model of switched reluctance vibratory drive

Russian Electrical Engineering, 2012
We propose a dynamic model of a rectifier inductor motor that permits use of numerical methods to assess the impact of control parameters—shape, amplitude, and supply voltage and commutation angle phase fluctuations of the controlling device of the drive.
V. M. Sandalov, Yu. S. Sergeev
openaire   +1 more source

Drive effect on vibratory maintenance of rotation

Journal of Machinery Manufacture and Reliability, 2015
Dynamic analysis is carried out for a system in which the alternating motion of an oscillator is transformed into rotary motion of an unbalanced weight under the action of an electrodynamic vibration exciter. The conditions of the existence and stability of stationary modes of forced oscillations are investigated by the averaging method in the first ...
M. E. Gerts, M. M. Gerts
openaire   +1 more source

Optimization of Vibratory Source Electromagnetic Drive Operating Process

2018 19th International Conference of Young Specialists on Micro/Nanotechnologies and Electron Devices (EDM), 2018
The linear electromagnetic machines, which are designed for operating as impact drives in well impulse vibratory sources applied for the impact on oil layers at great depth, have been comprehensively investigated. The lab results of the model operating processes are presented.
Boris F. Simonov, Vladimir Yu. Neyman, Aleksey O. Kordubailo   +2 more
openaire   +1 more source

A study of vibratory driving in granular soils

Géotechnique, 1980
Two types of vibratory pile driving have been identified by the Authors termed respectively ‘slow’ and ‘fast’ vibrodriving. The occurrence of slow or fast motion is determined by the initial soil density, pile diameter, displacement amplitude and acceleration of vibration. Slow vibrodriving is concluded to be the most widely encountered and the paper,
A. A. Rodger, G. S. Littlejohn
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Drive Dynamics of Vibratory Machines with Inertia Excitation

2021
Dynamics of the vibration machine taking into account the elasticity of coupling of the unbalance vibration exciter with a limited- power electric motor is considered. A solution describing the relative torsional oscillations of the vibration exciter and motor rotors in steady (near-steady) motion modes and the formula for vibrational torque was ...
Nikolay Yaroshevich, Olha Yaroshevych, Viktor Lyshuk   +2 more
openaire   +1 more source

Underwater noise and transmission loss from vibratory pile driving

The Journal of the Acoustical Society of America, 2014
High levels of underwater sound can be produced in vibratory pile driving that can carry regulatory implications. In this presentation, observations of underwater noise from vibratory pile driving made with a vertical line array placed at range 17 m from the source (water depth 7.5 m) are discussed, along with simultaneous measurements made at ranges ...
Peter H. Dahl, Dara M. Farrell
openaire   +1 more source

VIBRATORY ACTUATOR AND DRIVE DEVICE USING THE SAME

The Journal of the Acoustical Society of America, 2012
A vibratory actuator is provided in which a movable body can be stably driven even when a groove is formed in an abutment body by the friction between the driver element and the abutment body. An ultrasonic actuator ( 2 ) includes an actuator body ( 4 ) which performs a longitudinal vibration and a bending vibration, and a driver element ( 8 a, 8
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Theory and Development of Vibratory Pile-Driving Equipment

Offshore Technology Conference, 1989
ABSTRACT This paper discusses three topics:an overview of the development of vibratory hammers, along with a basic description of the equipment,some basic theory of operation and driving capability, andthe development of a new series of vibratory hammers that operate at 40 Hz while retaining the drivability of lower
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Monitoring and Process Control of Vibratory Driving

2019
The Geotechnical Engineering Journal of the SEAGS & AGSSEA, 50, 3, 1-10.
openaire   +1 more source

A unified modelling framework for vibratory pile driving methods

2023
The ambitious goals towards the decarbonization of the global energy sector have amplified the demand for renewable energy resources. Amongst the renewables, offshore wind possesses a pivotal role in this endeavour, showcasing remarkable growth in recent years.
openaire   +3 more sources