The effect of shock waves on brain blood pressure; experimental and computational studies. (2016)

• Record Type: Journal Article
• Authors: Hashemi, Siavash; Jahnke, Douglas; Sadegh, Ali M.; Andreopoulos, Yiannis
• Is Part Of: International journal of experimental and computational biomechanics. Volume 4:Number 1(2016)
• Page Start: 59
• Page End: 78
• Publication Date: 2016
• Subjects: shock waves -- blast waves -- brain blood pressure -- finite element analysis -- FEA -- hematoma -- blood vessels -- simulation -- 3D modelling; Human mechanics -- Periodicals; Biomechanics -- Computer simulation -- Periodicals; Biomechanics -- Methodology -- Periodicals; 612.76
• Languages: English
• ISSNs: 1755-8735

Abstract

In this paper, the induced pressure in blood vessels of the brain due to a blast has been investigated. An idealised experiment was designed, consisting of a ballistic rectangular gel block with a built-in conduit filled with water, representing the brain with a blood vessel, was placed in front of a shock tube. The experimental setup was simulated by a local 3D FE model which was validated with the experimental data. Results demonstrated that the skull, brain and meningeal layers reduce the intensity of a primary blast wave by a factor of 86 until it reaches the brain vessels. Furthermore, it was concluded that the striking shock waves with BOP greater than 5 MPa would increase the blood pressure to the critical level of 57 kPa which could onset failure and cause hematoma.