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Abstract <p>The article considers controlling vibratory motion dynamics using active dampers, making it possible to significantly reduce the level of mechanical vibrations of buildings and structures. A controlled reactive damper can be considered a highly efficient method of damping structural vibrations of structures under nonstationary (seismic) impacts. The reactive damper activation process is controlled by the “coordinate – damper electric drive” pair. Motion tracking is done via special sensors for determining linear and angular displacements. The operation principle of a reactive damper involves creating an alternating reactive force to prevent relative (bending) displacements (vibratory displacements) of a structure at target time instants. Several ways of creating a reactive jet (reactive forced action on a mechanical system) are shown: a reactive fluid jet ejected under high pressure; a reactive gas jet flowing under high pressure; a reactive jet from a burning fuel. The relations for calculating their influence are presented. The finite element method (FEM) motion equations for a construction node with an attached reactive damper are given for the central difference approximation of derivatives and using the Newmark method.</p>

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Active Vibration Dampers of Buildings and Structures Operated under the Reactive Jet Principle

  • 期刊论文

  • 发表日期：

    2025年10月1日

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  • A. I. Shein,
  • M. B. Zaitsev,
  • A. V. Chumanov,
  • O. G. Zemtsova,
  • A. N. Bykov

摘要

Abstract

The article considers controlling vibratory motion dynamics using active dampers, making it possible to significantly reduce the level of mechanical vibrations of buildings and structures. A controlled reactive damper can be considered a highly efficient method of damping structural vibrations of structures under nonstationary (seismic) impacts. The reactive damper activation process is controlled by the “coordinate – damper electric drive” pair. Motion tracking is done via special sensors for determining linear and angular displacements. The operation principle of a reactive damper involves creating an alternating reactive force to prevent relative (bending) displacements (vibratory displacements) of a structure at target time instants. Several ways of creating a reactive jet (reactive forced action on a mechanical system) are shown: a reactive fluid jet ejected under high pressure; a reactive gas jet flowing under high pressure; a reactive jet from a burning fuel. The relations for calculating their influence are presented. The finite element method (FEM) motion equations for a construction node with an attached reactive damper are given for the central difference approximation of derivatives and using the Newmark method.