title: Computational biomechanics of human brain with and without the inclusion of the body under different blast orientation.
abstract: Three different human head models in a free space are exposed to blast waves coming from four different directions. The four head-neck-body models composed of model a, with the neck free in space; model b, with neck fixed at the bottom; and model c, with the neck attached to the body. The results show that the effect of the body can be ignored for the first milliseconds of the head-blast wave interactions. Also one can see that although most biomechanical responses of the brain have similar patterns in all models, the shear stresses are heavily increased after a few milliseconds in model b in which the head motion is obstructed by the fixed-neck boundary conditions. The free-floating head model results are closer to the attached-body model.
authors.affiliation: a Mechanical Engineering Department , North Dakota State University , Fargo , ND , USA.
authors.forename: Mehdi
authors.initials: M
authors.lastname: Salimi Jazi
authors.affiliation: a Mechanical Engineering Department , North Dakota State University , Fargo , ND , USA.
authors.forename: Asghar
authors.initials: A
authors.lastname: Rezaei
authors.affiliation: a Mechanical Engineering Department , North Dakota State University , Fargo , ND , USA.
authors.forename: Fardad
authors.initials: F
authors.lastname: Azarmi
authors.affiliation: a Mechanical Engineering Department , North Dakota State University , Fargo , ND , USA.
authors.forename: Mariusz
authors.initials: M
authors.lastname: Ziejewski
authors.affiliation: a Mechanical Engineering Department , North Dakota State University , Fargo , ND , USA.
authors.forename: Ghodrat
authors.initials: G
authors.lastname: Karami
mesh_terms: D000054:Acceleration; D001696:Biomechanical Phenomena; D001753:Blast Injuries / Q000134:cerebrospinal fluid / Q000503:physiopathology*; D001921:Brain / Q000503:physiopathology*; D001930:Brain Injuries / Q000134:cerebrospinal fluid / Q000503:physiopathology*; D003198:Computer Simulation; D004548:Elasticity; D006257:Head / Q000503:physiopathology; D006801:Humans; D007427:Intracranial Pressure; D008953:Models, Anatomic; D009333:Neck / Q000503:physiopathology; D013314:Stress, Mechanical; D014783:Viscosity
keywords: Finite element (FE); blast load; fluid–solid interaction (FSI); head boundary condition; head model; intracranial pressure (ICP); shear stress