Virtual Vehicle

Modal Analysis

Test Bed Specifications


Length: 3,50 m

Width: 6 m

Elastic support of the vibrating foundation

Loading Capacity :

max. load: 4 tons

(car body, power train, railway bogie etc. )


Impact Hammer


Free-free boundary conditions

Test Equipment

Polytec-Scanning laser vibrometer

Shaker (independent control)

LMS Test.Lab System for the analysis of natural frequencies (max. 96 channels)



Fields of Application

Measurement of transfer functions for modal analysis

  • car body
  • engine/gear box unit
  • railway bogie

Measurement of entrance and transfer impedances of

  • engine mountings
  • vehicle seats etc

Measurement of running mode shapes stimulated by shaker

  • power train at idle conditions