OPTIMIZATION OF PNEUMATIC VIBRATION ISOLATION SYSTEM FOR VEHICLE SUSPENSION

Air springs are perhaps the most versatile and adaptable type of suspension element. They provide practically frictionless action, adjustable load capacity and simplicity of height control. Initially, a vehicle suspension system with a pneumatic isolator connected to a fixed volume tank via parallel plate restrictor is considered. Here the damping is provided by the flow of air through the restricted passage which has an advantage over the conventional viscous shock absorber. Body movements are only considered to be vertical harmonic displacement. An optimization technique is applied to evaluate the optimum values of many parameters involved for which the maximum transmitted motion to the body would be minimum over the broad frequency range. Theoretical expressions for the transmissibility of the body and the wheel, optimum values of mass ratio, stiffness ratio and damping ratio are presented. Design data are presented nondimensionally for parameter variations which are sufficiently broad to encompass a wide range of practical engineering problems.

• Supplemental Notes:
  • Paper for Meeting, September 26-30, 1977.
• Corporate Authors:

  American Society of Mechanical Engineers

  Two Park Avenue
  New York, NY  United States  10016-5990
• Authors:
  • ESMAILZADEH, E
• Publication Date: 1977

Media Info

• Features: References;
• Pagination: 7 p.

Subject/Index Terms

• TRT Terms: Absorption; Air springs; Applications; Damping (Physics); Pneumatics; Ride quality; Spring; Suspension systems; Vehicles; Vibration
• Subject Areas: Railroads; Research; Vehicles and Equipment;

Filing Info

• Accession Number: 00170455
• Record Type: Publication
• Source Agency: Engineering Index
• Report/Paper Numbers: Pap n 77-DET-17
• Files: TRIS
• Created Date: Feb 16 1978 12:00AM