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Mesh considerations for finite element blast modelling in biomechanics.

Publication ,  Journal Article
Panzer, MB; Myers, BS; Bass, CR
Published in: Computer methods in biomechanics and biomedical engineering
January 2013

Finite element (FE) modelling is a popular tool for studying human body response to blast exposure. However, blast modelling is a complex problem owing to more numerous fluid-structure interactions (FSIs) and the high-frequency loading that accompanies blast exposures. This study investigates FE mesh design for blast modelling using a sphere in a closed-ended shock tube meshed with varying element sizes using both tetrahedral and hexahedral elements. FSI was consistent for sphere-to-fluid element ratios between 0.25 and 4, and acceleration response was similar for both element types (R(2) = 0.997). Tetrahedral elements were found to become increasingly volatile following shock loading, causing higher pressures and stresses than predicted with the hexahedral elements. Deviatoric stress response was dependent on the sphere mesh size (p < 0.001), while the pressure response was dependent on the shock tube mesh size (p < 0.001). The results of this study highlight the necessity for mesh sensitivity analysis in blast models.

Duke Scholars

Published In

Computer methods in biomechanics and biomedical engineering

DOI

EISSN

1476-8259

ISSN

1025-5842

Publication Date

January 2013

Volume

16

Issue

6

Start / End Page

612 / 621

Related Subject Headings

  • Skull
  • Pressure
  • Models, Theoretical
  • Models, Anatomic
  • Humans
  • Finite Element Analysis
  • Explosions
  • Computer Simulation
  • Brain Injuries
  • Brain
 

Citation

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Panzer, M. B., Myers, B. S., & Bass, C. R. (2013). Mesh considerations for finite element blast modelling in biomechanics. Computer Methods in Biomechanics and Biomedical Engineering, 16(6), 612–621. https://doi.org/10.1080/10255842.2011.629615
Panzer, Matthew B., Barry S. Myers, and Cameron R. Bass. “Mesh considerations for finite element blast modelling in biomechanics.Computer Methods in Biomechanics and Biomedical Engineering 16, no. 6 (January 2013): 612–21. https://doi.org/10.1080/10255842.2011.629615.
Panzer MB, Myers BS, Bass CR. Mesh considerations for finite element blast modelling in biomechanics. Computer methods in biomechanics and biomedical engineering. 2013 Jan;16(6):612–21.
Panzer, Matthew B., et al. “Mesh considerations for finite element blast modelling in biomechanics.Computer Methods in Biomechanics and Biomedical Engineering, vol. 16, no. 6, Jan. 2013, pp. 612–21. Epmc, doi:10.1080/10255842.2011.629615.
Panzer MB, Myers BS, Bass CR. Mesh considerations for finite element blast modelling in biomechanics. Computer methods in biomechanics and biomedical engineering. 2013 Jan;16(6):612–621.

Published In

Computer methods in biomechanics and biomedical engineering

DOI

EISSN

1476-8259

ISSN

1025-5842

Publication Date

January 2013

Volume

16

Issue

6

Start / End Page

612 / 621

Related Subject Headings

  • Skull
  • Pressure
  • Models, Theoretical
  • Models, Anatomic
  • Humans
  • Finite Element Analysis
  • Explosions
  • Computer Simulation
  • Brain Injuries
  • Brain