A Numerical Study on the Influence of the Upper Body and Neck on Head Kinematics in Tangential Bicycle Helmet Impact

The CEN/TC158/WG11 is developing a new helmet test that takes into account tangential loading. In order to derive a realistic injury risk induced by tangential loading, realistic boundary conditions are essential. However, the influence of the upper body and neck on rotational loading remains unclear. The aim of this study is to analyze the effect of the upper body and neck in tangential head impact using three state‐of‐the‐art human body models (GHBM, THUMS, CHARM), covering three anthropometric sizes (10‐year‐old, 5th and 50th percentile) and two postures (standing, crouching). A thoroughly validated bicycle helmet model was fitted to the human body models (HBMs). The HBMs were propelled at 6.5 m/s against a flat horizontal anvil. The influence of upper body posture, upper body’s compliance and body size was analyzed. Simulations were comprehensively evaluated taking into account multiple head injury criteria, contact forces and energy balances. The data suggest that the contact forces, deformation energy and rotational peak acceleration in isolated head tests are underestimated, while translational accelerations are overestimated. Head velocity change and brain injury criteria (BrIC) are consistent, though. Other head injury criteria in equivalent configurations are different in head‐only and full‐body impacts.

• Record URL:
  http://www.ircobi.org/wordpress/downloads/irc16/pdf-files/28.pdf
• 
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/22353151
• Supplemental Notes:
  • Abstract reprinted with permission of the International Council on the Biomechanics of Injury (IRCOBI).
• Corporate Authors:

  International Research Council on Biomechanics of Injury (IRCOBI)

  Winkelriedstrasse 27
  Zurich,   Switzerland  CH-8006
• Authors:
  • Feist, Florian
  • Klug, Corina
• Conference:
  • 2016 IRCOBI Conference
  • Location: Malaga , Spain
  • Date: 2016-9-14 to 2016-9-16
• Publication Date: 2016

Language

• English

Media Info

• Media Type: Web
• Features: Figures; References; Tables;
• Pagination: 23p
• Monograph Title: 2016 IRCOBI Conference Proceedings
• Serial:
  • IRCOBI Conference Proceedings
  • Publisher: International Research Council on Biomechanics of Injury (IRCOBI)
  • ISSN: 2235-3151
  • Serial URL: http://www.ircobi.org/proceedings.php

Subject/Index Terms

• TRT Terms: Bicycle helmets; Biophysics; Crash injuries; Crash victim simulation; Dummies
• Uncontrolled Terms: Head and neck injuries
• Subject Areas: Pedestrians and Bicyclists; Safety and Human Factors;

Filing Info

• Accession Number: 01614042
• Record Type: Publication
• Files: TRIS
• Created Date: Oct 25 2016 9:47AM