Effects of pre-impact swerving/steering on physical motion of the volunteer in the low-speed side-impact sled test

S. Ejima, D. Ito, F. Satou, K. Mikami, Koshiro Ono, K. Kaneoka, I. Shiina

Research output: Contribution to conferencePaper

13 Citations (Scopus)

Abstract

In order to simulate the actual pre-crash condition of a car that occurs when the drivers avoid an accident in an emergency situation, low-speed lateral sled tests on human volunteers were conducted using a sled-mounted rigid seat. It was observed that when the subject's muscles were initially relaxed, Sternoclaidomastoid and Rectus Abdominis started activation at around 100ms after the onset of acceleration and reached its maximum value at around 200-400ms. During this time period, most of the individual body region acceleration responses and restraint system reaction forces also peaked. Furthermore, the lateral flexion of head-neck-torso kinematics was strongly influenced by the muscle activity in the muscle tensed case and the posture-control effect of the lateral flexion due to the muscle tension was around 20-40%. This experiment indicates that muscles can control the occupant's behavior significantly during the low-speed impact, relating to the occupant's posture at the pre-crash phase.

Original languageEnglish
Pages352-366
Number of pages15
Publication statusPublished - 2012 Oct 29
Event2012 International Research Council on the Biomechanics of Injury Conference, IRCOBI 2012 - Dublin, Ireland
Duration: 2012 Sep 122012 Sep 14

Conference

Conference2012 International Research Council on the Biomechanics of Injury Conference, IRCOBI 2012
CountryIreland
CityDublin
Period12/9/1212/9/14

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Keywords

  • Kinematics
  • Muscle
  • Occupants
  • Pre-crash
  • Side impacts
  • Volunteers

ASJC Scopus subject areas

  • Biomedical Engineering
  • Human Factors and Ergonomics

Cite this

Ejima, S., Ito, D., Satou, F., Mikami, K., Ono, K., Kaneoka, K., & Shiina, I. (2012). Effects of pre-impact swerving/steering on physical motion of the volunteer in the low-speed side-impact sled test. 352-366. Paper presented at 2012 International Research Council on the Biomechanics of Injury Conference, IRCOBI 2012, Dublin, Ireland.