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Evaluating Primary Blast Effects In Vitro
Published on: September 18, 2017
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A computational study on brain tissue under blast: primary and tertiary blast injuries
A Rezaei1, M Salimi Jazi, G Karami
1Mechanical Engineering Department, North Dakota State University, Fargo, ND 58108-6050, USA.
International Journal for Numerical Methods in Biomedical Engineering
|February 12, 2014
Summary
This study on blast shock waves in confined spaces found primary blast injury (PBI) to be more severe than tertiary blast injury (TeBI). Biomechanical data revealed significant brain responses to shockwave impacts and reflections.
Area of Science:
- Biomechanics
- Trauma research
- Computational modeling
Background:
- Blast events can cause primary blast injury (PBI) from shockwaves and tertiary blast injury (TeBI) from impact.
- Understanding head and brain responses to blast in confined spaces is crucial for injury prevention.
Purpose of the Study:
- To investigate the biomechanical responses of a human head model to blast shock waves in confined spaces.
- To compare the severity of PBI and TeBI under different blast scenarios.
Main Methods:
- A deformable finite element head model was used.
- Simulated blast shock waves with varying intensities in open and confined spaces.
- Analyzed brain response data including stress, pressure, velocity, and acceleration.
Main Results:
- Wave reflections in confined spaces caused fluctuations in biomechanical data.
- Primary blast injury (PBI) was found to be more pronounced than tertiary blast injury (TeBI) in the studied confined space scenarios.
- The severity of PBI and TeBI is situation-dependent.
Conclusions:
- Blast shock waves in confined spaces pose a significant risk of primary blast injury.
- Finite element modeling provides valuable insights into head injury biomechanics during blast events.
- Further research is needed to fully elucidate the complex interactions of blast waves and head impacts.
