Experimental and numerical investigation of the mechanism of blast wave transmission through a surrogate head

Yi Hua, Praveen Kumar Akula, Linxia Gu, Jeff Berg, Carl A. Nelson

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

This work is to develop an experiment-validated numerical model to elucidate the wave transmission mechanisms through a surrogate head under blast loading. Repeated shock tube tests were conducted on a surrogate head, i.e., water-filled polycarbonate shell. Surface strain on the skull simulant and pressure inside the brain simulant were recorded at multiple locations. A numerical model was developed to capture the shock wave propagation within the shock tube and the fluid-structure interaction between the shock wave and the surrogate head. The obtained numerical results were compared with the experimental measurements. The experiment-validated numerical model was then used to further understand the wave transmission mechanisms from the blast to the surrogate head, including the flow field around the head, structural response of the skull simulant, and pressure distributions inside the brain simulant. Results demonstrated that intracranial pressure in the anterior part of the brain simulant was dominated by the direct blast wave propagation, while in the posterior part it was attributed to both direct blast wave propagation and skull flexure, which took effect at a later time. This study served as an exploration of the physics of blast-surrogate interaction and a precursor to a realistic head model.

Original languageEnglish (US)
Article number031010
JournalJournal of Computational and Nonlinear Dynamics
Volume9
Issue number3
DOIs
StatePublished - Jul 1 2014

Fingerprint

Blast
Wave transmission
Numerical Investigation
Experimental Investigation
Wave propagation
Numerical models
Brain
Shock tubes
Shock waves
Wave Propagation
Shock Tube
Shock Waves
Fluid structure interaction
Polycarbonates
Pressure distribution
Flow fields
Polycarbonate
Physics
Experiments
Flexure

Keywords

  • blast wave
  • fluid-structure interactions
  • skull flexure
  • stress wave
  • surrogate head

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Mechanical Engineering
  • Applied Mathematics

Cite this

Experimental and numerical investigation of the mechanism of blast wave transmission through a surrogate head. / Hua, Yi; Akula, Praveen Kumar; Gu, Linxia; Berg, Jeff; Nelson, Carl A.

In: Journal of Computational and Nonlinear Dynamics, Vol. 9, No. 3, 031010, 01.07.2014.

Research output: Contribution to journalArticle

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