PMID- 34791052
OWN - NLM
STAT- MEDLINE
DCOM- 20220427
LR  - 20220427
IS  - 1528-8951 (Electronic)
IS  - 0148-0731 (Linking)
VI  - 144
IP  - 5
DP  - 2022 May 1
TI  - Evaluation of Blast Simulation Methods for Modeling Blast Wave Interaction With 
      Human Head.
LID - 051009 [pii]
LID - 10.1115/1.4053059 [doi]
AB  - Blast-induced traumatic brain injury (bTBI) research is crucial in asymmetric 
      warfare. The finite element analysis is an attractive option to simulate the 
      blast wave interaction with the head. The popular blast simulation methods are 
      ConWep-based pure Lagrangian, Arbitrary-Lagrangian-Eulerian, and coupling method. 
      This study examines the accuracy and efficiency of ConWep and coupling methods in 
      predicting the biomechanical response of the head. The simplified cylindrical, 
      spherical surrogates and biofidelic human head models are subjected to 
      field-relevant blast loads using these methods. The reflected overpressures at 
      the surface and pressures inside the brain from the head models are qualitatively 
      and quantitatively evaluated against the available experiments. Both methods 
      capture the overall trends of experiments. Our results suggest that the accuracy 
      of the ConWep method is mainly governed by the radius of curvature of the 
      surrogate head. For the relatively smaller radius of curvature, such as 
      cylindrical or spherical head surrogate, ConWep does not accurately capture decay 
      of reflected blast overpressures and brain pressures. For the larger radius of 
      curvature, such as the biofidelic human head, the predictions from ConWep match 
      reasonably well with the experiment. For all the head surrogates considered, the 
      reflected overpressure-time histories predicted by the coupling method match 
      reasonably well with the experiment. Coupling method uniquely captures the 
      shadowing and union of shock waves governed by the geometry-driven flow dynamics 
      around the head. Overall, these findings will assist the bTBI modeling community 
      to judiciously select an objective-driven modeling methodology.
CI  - Copyright (c) 2022 by ASME.
FAU - Sutar, Sunil
AU  - Sutar S
AD  - Department of Mechanical and Industrial Engineering, Indian Institute of 
      Technology Roorkee, Roorkee, Uttarakhand 247667, India.
FAU - Ganpule, Shailesh
AU  - Ganpule S
AD  - Department of Mechanical and Industrial Engineering, Indian Institute of 
      Technology Roorkee, Roorkee, Uttarakhand 247667, India.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - United States
TA  - J Biomech Eng
JT  - Journal of biomechanical engineering
JID - 7909584
SB  - IM
MH  - *Blast Injuries
MH  - *Brain Injuries
MH  - Computer Simulation
MH  - Explosions
MH  - Finite Element Analysis
MH  - Head/physiology
MH  - Humans
EDAT- 2021/11/19 06:00
MHDA- 2022/04/28 06:00
CRDT- 2021/11/18 07:14
PHST- 2021/03/30 00:00 [received]
PHST- 2021/11/19 06:00 [pubmed]
PHST- 2022/04/28 06:00 [medline]
PHST- 2021/11/18 07:14 [entrez]
AID - 1128656 [pii]
AID - 10.1115/1.4053059 [doi]
PST - ppublish
SO  - J Biomech Eng. 2022 May 1;144(5):051009. doi: 10.1115/1.4053059.