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Validation of a full body finite element model (THUMS) for running-type impacts to the lower extremity

Author

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  • Alison Schinkel-Ivy
  • William J. Altenhof
  • David M. Andrews

Abstract

The purpose of this study was to determine whether modifying an existing, highly biofidelic full body finite element model [total human model for safety (THUMS)] would produce valid amplitude and temporal shock wave characteristics as it travels proximally through the lower extremity. Modifying an existing model may be more feasible than developing a new model, in terms of cost, labour and expertise. The THUMS shoe was modified to more closely simulate the material properties of a heel pad. Relative errors in force and acceleration data from experimental human pendulum impacts and simulated THUMS impacts were 22% and 54%, respectively, across the time history studied. The THUMS peak acceleration was attenuated by 57.5% and took 19.7 ms to travel proximally along the lower extremity. Although refinements may be necessary to improve force and acceleration timing, the modified THUMS represented, to a certain extent, shock wave propagation and attenuation demonstrated by living humans under controlled impact conditions.

Suggested Citation

  • Alison Schinkel-Ivy & William J. Altenhof & David M. Andrews, 2014. "Validation of a full body finite element model (THUMS) for running-type impacts to the lower extremity," Computer Methods in Biomechanics and Biomedical Engineering, Taylor & Francis Journals, vol. 17(2), pages 137-148, January.
  • Handle: RePEc:taf:gcmbxx:v:17:y:2014:i:2:p:137-148
    DOI: 10.1080/10255842.2012.672562
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