Biomechanics and Modeling in Mechanobiology

, Volume 13, Issue 1, pp 123–140

A computational model of blast loading on the human eye

  • Rajneesh Bhardwaj
  • Kimberly Ziegler
  • Jung Hee Seo
  • K. T. Ramesh
  • Thao D. Nguyen
Original Paper

Abstract

Ocular injuries from blast have increased in recent wars, but the injury mechanism associated with the primary blast wave is unknown. We employ a three-dimensional fluid–structure interaction computational model to understand the stresses and deformations incurred by the globe due to blast overpressure. Our numerical results demonstrate that the blast wave reflections off the facial features around the eye increase the pressure loading on and around the eye. The blast wave produces asymmetric loading on the eye, which causes globe distortion. The deformation response of the globe under blast loading was evaluated, and regions of high stresses and strains inside the globe were identified. Our numerical results show that the blast loading results in globe distortion and large deviatoric stresses in the sclera. These large deviatoric stresses may be indicator for the risk of interfacial failure between the tissues of the sclera and the orbit.

Keywords

Blast injury Fluid–structure interaction Ocular biomechanics Immersed boundary method Sclera 

Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Rajneesh Bhardwaj
    • 1
  • Kimberly Ziegler
    • 2
  • Jung Hee Seo
    • 2
  • K. T. Ramesh
    • 2
  • Thao D. Nguyen
    • 2
  1. 1.Department of Mechanical EngineeringIndian Institute of Technology BombayMumbaiIndia
  2. 2.Department of Mechanical EngineeringThe Johns Hopkins UniversityBaltimoreUSA

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