New Proposed Dynamic Vibration Absorbers for Excited Structures,

Abstract

Structural systems are very susceptible to oscillations. There exist not too many effective systems to dampen the dangerous motion of the structure. The more effective vibration absorbers have some disadvantages such as the adjustment, blockage and servicing. They can therefore not be employed in space structures. The following suggests a new damping device consisting of a completely filled liquid container filled with two immiscible liquids, in which the motion of the interface is able to effectively dampen the structure. The effectiveness is exhibited for the coupled structure-liquid system. In addition an active motion prevention system is proposed, consisting of a control system with a control accelerometer and a cold-gas jet system as a control force. Both systems show good results in preventing structural motion. (Author)

Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1984
Accession Number
ADP004712

Entities

People

  • H. F. Bauer

Tags

DTIC Thesaurus Topics

  • Accelerometers
  • California
  • Cold Gases
  • Containers
  • Control Systems
  • Fluids
  • Gases
  • Liquids
  • Motion
  • Oscillation
  • Vibration
  • Workshops

Fields of Study

  • Engineering

Readers

  • Combustion and Flow Dynamics.
  • Control Systems Engineering.
  • Structural Dynamics.

Technology Areas

  • Space
  • Space - Hall-Effect Thruster
  • Space - Spacecraft Maneuvers