Multi axis vibration simulator (MAVIS)

Multi axis vibration simulator (MAVIS)
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Components in measuring equipment and devices, components of general mechanical engineering or structures in aerospace are often exposed to strong dynamic loads during their use. In order to avoid damage or undesirable vibration problems during operation or transportation, the vibration behavior must be examined or at least estimated during the development phase.
To solve such problems, the Institute of Aeroelasticity has a multi-axis shaking table.

General data

  • Task: 6-axis controlled vibration table to simulate dynamic loads
  • Location: Institute of Aeroelasticity, Department of Structural Dynamics and Aeroelastic System Identification, Göttingen/Germany
  • Specialized testing team for vibration testing with ISO 9000 certified work processes
  • Measuring system with 384 measuring channels available via additional GA

Technical data

The multi-axis shaking table is a multi-axis vibration simulator (MAVIS) and is operated hydraulically. It consists of a square vibration table with a clamping area of 1.50 m x 1.50 m. Four vertically and three horizontally connected hydraulic cylinders can generate movements in the direction of all six spatial degrees of freedom (three translations and three rotations). In this way, the components mounted on the vibration table are exposed to 6-axis dynamic loads. The working range of the system extends from 0 to 100 Hz. In the low frequency range, the movements are limited by the maximum stroke of the hydraulic actuators. In the medium and high frequency range, the maximum oil flow and the maximum hydraulic forces are the limiting factors.
The following table provides an overview of the system's performance data.

Vibration table

 

Mass

500 kg

Clamping surface

1,5 x 1,5 m

Fastening grid

15 x 15 cm

System performance

 

Maximum payload

3.000 kg

Maximum lift at 0 - 1,5 Hz

+50 mm / -50 mm

Maximum speed at 1,5 - 10 Hz

+0,5 m/s / -0,5 m/s

Maximum acceleration empty table

+80 m/s2 / -80 m/s2

Maximum acceleration maximum payload

+25 m/s2 / -25 m/s2

Department

Structural Dynamics and System Identification

The Department of Structural Dynamics and System Identification deals with the dynamics and vibrations of structures in aeronautics and space travel. Through numerical analyzes and experimental investigations, essential mechanisms of the vibrations are recognized and cause-effect relationships are understood. Efficient measures for damping and influencing vibrations are developed with the help of numerical simulations. The system identification is used for the construction of mathematical substitute models of real technical systems.

Contact

Dr.-Ing. Marc Böswald

Head of Structural Dynamics and System Identification
German Aerospace Center (DLR)
Institute of Aeroelasticity
Bunsenstraße 10, 37073 Göttingen
Germany