A brief discussion of the various inputs that affect ride quality and the need for ride quality criteria is given. Isolation of the human in any vehicle from undue vibration is an important criteria for ride comfort. Some current passive isolation systems are discussed in the context of seat-man models for automobile vibration isolation. Usual passive isolation systems use a combination of linear springs and viscous damping elements. Active vibration isolation through the use of feed-back controls using relative displacement or accelerations on tractor seats by C.W. Suggs and L.F. Stikeleather and jet transport seats by P. Calcaterra is discussed. In conjunction with both the active and passive vibration isolation systems static comfort is maintained with seat cushions. Alleviation of compression fatigue can be achieved through moveable and adjustable seats and dynamic cushions. Human body mechanistic modeling by Coerman, Dieckman, Stanley Aviation, and Suggs is presented. Experimental parameter determination of the limped mass models of the human through the use of mechanical impedance is discussed. Recent modeling by Jex and Allen of the human through behavioral techniques for research into operator control capabilities in a dynamic environment and its potential for correlation with subjective ride quality measurements is discussed. A survey of state of the art seat-man modeling for impulsive loading consisting of work done by Cornell Aeronautical Laboratory, Jack Collins and James Turnbow is given.

  • Corporate Authors:

    University of Texas, Austin

    Council for Advanced Transportation Studies
    Austin, TX  United States  78712
  • Authors:
    • Shanahan, B
    • Steraman, R
    • Healey, A
  • Publication Date: 1973-11

Media Info

  • Features: Appendices; Figures; References;
  • Pagination: 52 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00099043
  • Record Type: Publication
  • Report/Paper Numbers: No. 8 Res. Memo
  • Files: TRIS
  • Created Date: Oct 18 1975 12:00AM