RELATIONSHIPS BETWEEN OCCUPANT MOTION AND SEAT CHARACTERISTICS IN LOW-SPEED REAR IMPACTS

Sled tests were conducted with some seats that had different characteristics to understand the relationships between occupant motion and seat characteristics in low-speed rear impacts. The position of the head restraint and the stiffness distribution of the seatback were selected as parameters expressing seat characteristics. Volunteers' cervical vertebral motions were photographed with an x-ray cineradiographic system at a speed of 90 frames/sec as well as the visible motions of the dummies and volunteers. The results indicated that the head restraint position and upper seatback stiffness influenced occupant motions. Correlations between visible motions, such as ramping-up, retraction, and extension were also analyzed, and some correlations were found.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0768003644
• Supplemental Notes:
  • This paper was presented at the 1999 SAE International Congress and Exposition and is included in the SAE Special Publication, "Occupant Protection" (SP-1432).
• Corporate Authors:

  Society of Automotive Engineers (SAE)

  400 Commonwealth Drive
  Warrendale, PA  United States  15096
• Authors:
  • Watanabe, Y
  • ICHIKAWA, H
  • KAYAMA, O
  • Ono, K
  • KANEOKA, K
  • INAMI, S
• Conference:
  • 1999 SAE International Congress and Exposition
  • Location: Detroit, Michigan , United States
  • Date: 1999-3-1 to 1999-3-4
• Publication Date: 1999-3

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 13-22
• Serial:
  • SAE Special Publications
  • Publisher: Society of Automotive Engineers (SAE)

Subject/Index Terms

• TRT Terms: Crash injuries; Dummies; Headrests; Injuries; Injury causes; Injury rates; Injury types; Occupant dynamics; Rear end crashes; Restraint systems; Seat backs; Seats; Sled tests; Stiffness
• Geographic Terms: Japan
• Subject Areas: Highways; Safety and Human Factors; Vehicles and Equipment; I84: Personal Injuries; I91: Vehicle Design and Safety;

Filing Info

• Accession Number: 00770074
• Record Type: Publication
• ISBN: 0768003644
• Report/Paper Numbers: 1999-01-0635
• Files: TRIS
• Created Date: Sep 30 1999 12:00AM