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Zolfagharian, et al
A

B

C

Figure 8. Maximum displacements of midsoles for different lattices (circular, elliptical, and hexagonal, from left to right, respectively) at
different scenarios of (A) walking, (B) running, and (C) jumping.

A respectively. This result is also arguable according to
Figure 9, where with increasing displacement values
in different lattices and consequently increasing
amount of stress applied to the midsole, higher
dissipation energy occurs with the same trend. As a
result, the elliptical lattice experiences the highest
amount of energy dissipation.
In general, hexagonal grids under non-planar
loading have a higher energy absorption capacity than
in-plane loading. The hexagonal lattice could be useful
B
when the merely energy absorption of non-planar
loading is the goal. Yet, the impact force duration is
one of the important parameters in energy absorption.
When the goal is to protect the human body from injury
in walking, running, and jumping under the impact
load, the importance of the impact time dominates so
as with extending the time of impact its magnitude and
the risk of damage it causes to the human body reduces
accordingly. By applying the input forces of different
gaits of an individual according to Figure 6, it can be
Figure 9. Maximum (A) stress and (B) displacement of midsoles in seen that the amount of energy in Figures 10 and 11 for
different scenarios of walking, running, and jumping. jumping mode is much higher than running and walking

International Journal of Bioprinting (2021)–Volume 7, Issue 4 175