THE DYNAMIC CHARACTERISTICS OF AUTOMOBILE SEATS WITH HUMAN OCCUPANTS

The dynamic characteristics of seated human were measured in a laboratory environment. The seat/occupant system was excited vertically with random vibration. Relevant transfer functions were computed using real time acceleration signals fed to a Fourier Analyzer. The transfer functions describe the scat response, the human response, and the combined response in the frequency range from 2 to 20 Hz. Of possible significance in ride quality studies are the natural modes of vibration which were identified; these include a 3.0 Hz "head-nod" mode, a 3.0 Hz seat vertical mode, a 5.6 Hz human response mode, and a seat "back-slap" mode occurring at 11 Hz. /GMRL/

  • Corporate Authors:

    Society of Automotive Engineers

    400 Commonwealth Drive
    Warrendale, PA  USA  15096
  • Authors:
    • Varterasian, J H
    • Thompson, R R
  • Publication Date: 1977-3

Media Info

  • Pagination: 10 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00164999
  • Record Type: Publication
  • Report/Paper Numbers: SAE 770249
  • Files: TRIS
  • Created Date: Nov 23 1977 12:00AM