Mechanics of interaction of blast waves on surrogate head: Effect of head orientation

S. Ganpule, N. Chandra

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

Blast induced Traumatic Brain Injury (bTBI) has emerged as the most significant injury to warfighters in recent conflicts. How blast waves interact with the head and head protection device (helmet), and induce biomechanical loading on the head are not fully understood. This work focuses on the mechanics of blast wave head interactions on a surrogate head for various orientations (front, back, side and 45°) using experiments and numerical models. The role of the orientation of the head on the mechanical load experienced by the head is studied by monitoring pressures on the surface of a surrogate head subjected to planar blast waves. Validated numerical models are further employed to understand the experimental results and to interpret various aspects of flow mechanics (e.g. flow separation, flow reunion) around the head. Our results indicate that geometry of the head and its orientation with respect to the direction of the blast, govern the flow dynamics around the head and this alters the surface pressures experienced by the head. Orientation dependent responses predicted by the experiments and numerical models suggest that direction-specific tolerances are needed in the helmet design, in order to offer multi-directional protection under blast loading conditions.

Original languageEnglish (US)
Title of host publicationASME 2013 Summer Bioengineering Conference, SBC 2013
DOIs
StatePublished - Dec 1 2013
Externally publishedYes
EventASME 2013 Summer Bioengineering Conference, SBC 2013 - Sunriver, OR, United States
Duration: Jun 26 2013Jun 29 2013

Publication series

NameASME 2013 Summer Bioengineering Conference, SBC 2013
Volume1 B

Other

OtherASME 2013 Summer Bioengineering Conference, SBC 2013
CountryUnited States
CitySunriver, OR
Period6/26/136/29/13

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Biotechnology
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Mechanics of interaction of blast waves on surrogate head: Effect of head orientation'. Together they form a unique fingerprint.

Cite this