Heel-shoe interactions and the durability of EVA foam running-shoe midsoles.

@article{Verdejo2004HeelshoeIA,
  title={Heel-shoe interactions and the durability of EVA foam running-shoe midsoles.},
  author={R Verdejo and Nancy J Mills},
  journal={Journal of biomechanics},
  year={2004},
  volume={37 9},
  pages={1379-86}
}
A finite element analysis (FEA) was made of the stress distribution in the heelpad and a running shoe midsole, using heelpad properties deduced from published force-deflection data, and measured foam properties. The heelpad has a lower initial shear modulus than the foam (100 vs. 1050 kPa), but a higher bulk modulus. The heelpad is more non-linear, with a higher Ogden strain energy function exponent than the foam (30 vs. 4). Measurements of plantar pressure distribution in running shoes… CONTINUE READING
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