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.
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July 2014
Research-Article
Experimental and Numerical Investigation of the Mechanism of Blast Wave Transmission Through a Surrogate Head
Yi Hua,
Yi Hua
Department of Mechanical
and Materials Engineering,
and Materials Engineering,
University of Nebraska-Lincoln
,Lincoln, NE 68588-0656
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Praveen Kumar Akula,
Praveen Kumar Akula
Department of Mechanical
and Materials Engineering,
and Materials Engineering,
University of Nebraska-Lincoln
,Lincoln, NE 68588-0656
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Linxia Gu,
Linxia Gu
1
Department of Mechanical
and Materials Engineering,
and Materials Engineering,
University of Nebraska-Lincoln
,Lincoln, NE 68588-0656
1Corresponding author.
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Jeff Berg,
Jeff Berg
Department of Mechanical
and Materials Engineering,
and Materials Engineering,
University of Nebraska-Lincoln
,Lincoln, NE 68588-0656
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Carl A. Nelson
Carl A. Nelson
Department of Mechanical
and Materials Engineering,
and Materials Engineering,
University of Nebraska-Lincoln
,Lincoln, NE 68588-0656
Search for other works by this author on:
Yi Hua
Department of Mechanical
and Materials Engineering,
and Materials Engineering,
University of Nebraska-Lincoln
,Lincoln, NE 68588-0656
Praveen Kumar Akula
Department of Mechanical
and Materials Engineering,
and Materials Engineering,
University of Nebraska-Lincoln
,Lincoln, NE 68588-0656
Linxia Gu
Department of Mechanical
and Materials Engineering,
and Materials Engineering,
University of Nebraska-Lincoln
,Lincoln, NE 68588-0656
Jeff Berg
Department of Mechanical
and Materials Engineering,
and Materials Engineering,
University of Nebraska-Lincoln
,Lincoln, NE 68588-0656
Carl A. Nelson
Department of Mechanical
and Materials Engineering,
and Materials Engineering,
University of Nebraska-Lincoln
,Lincoln, NE 68588-0656
1Corresponding author.
Contributed by the Design Engineering Division of ASME for publication in the JOURNAL OF COMPUTATIONAL AND NONLINEAR DYNAMICS. Manuscript received July 17, 2013; final manuscript received November 27, 2013; published online February 13, 2014. Assoc. Editor: Carmen M. Lilley.
J. Comput. Nonlinear Dynam. Jul 2014, 9(3): 031010 (9 pages)
Published Online: February 13, 2014
Article history
Received:
July 17, 2013
Revision Received:
November 27, 2013
Citation
Hua, Y., Kumar Akula, P., Gu, L., Berg, J., and Nelson, C. A. (February 13, 2014). "Experimental and Numerical Investigation of the Mechanism of Blast Wave Transmission Through a Surrogate Head." ASME. J. Comput. Nonlinear Dynam. July 2014; 9(3): 031010. https://doi.org/10.1115/1.4026156
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