Accession Number : ADP004712

Title :   New Proposed Dynamic Vibration Absorbers for Excited Structures,

Corporate Author : HOCHSCHULE DER BUNDESWEHR MUNICH (GERMANY F R) INST OF SPACE TECHNOLOGY

Personal Author(s) : Bauer,H. F.

Report Date : NOV 1984

Pagination or Media Count : 27

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)

Descriptors :   *DAMPING, *VIBRATION, *STRUCTURAL RESPONSE, EXCITATION, INTERFACES, COLD GASES, ACCELEROMETERS, CHARTS

Distribution Statement : APPROVED FOR PUBLIC RELEASE