Sychronization of Rotating Mechanical Vibrators in the Prefabrication of Concrete

ABOUT THE INTERNATIONAL CONCRETE ABSTRACTS PORTAL

  • The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.

International Concrete Abstracts Portal

  


Title: Sychronization of Rotating Mechanical Vibrators in the Prefabrication of Concrete

Author(s): Claus Hanke and Steen Stentsoe

Publication: Journal Proceedings

Volume: 76

Issue: 12

Appears on pages(s): 1283-1304

Keywords: compacting; fresh concretes; mechanical drives;precast concrete; prefabrication; vibration (consolidation); vibrators (machinery).

Date: 12/1/1979

Abstract:
In a number of cases large scale vibration of fresh concrete requires that more than one mechanical vibrator is built in the vibrator construction. Detailed theoretical analysis has been done on the self-synchronization mechanisms of two coupled rotating mechanical vibrators of the eccentricity type. The coupling power transferred from one vibrator to the other plays an important role. As a main result /W/*/I has to be as large as possible (M = total mass of vibrator, 2/= distance between the shafts of the vibrator motors, I = dynamic moment of inertia of vibrator). Model experiments are done on two of the cases in the theoretical treatment. Results are in good agreement with theory.