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Topology Optimized Locking Compression Plates to Minimize Stress Shielding
and lower computational time, while finer mesh increases integrity, while values lower than 25% have no significant
the volume reduction and the computational time. As effect on the stiffness reduction. The corresponding
observed, no significant difference in equivalent stiffness equivalent stiffness values are presented in Tables 3-6. In
values will be obtained if elements were to be increased all cases, the equivalent stiffness decreases by increasing
more than 400,000 elements and the computational cost the volume reductions, confirming previously reported
will significantly increase. observations for TO of 2D plates . Several authors
[12]
Figures 5-8 present the optimized designs for observed similar results using TO to address stress
all plates (eight-, six-, and four- screw holes), different shielding by redesigning orthopedic implants in the case
loading conditions, and volume reduction. Imposed of pelvic prosthetics , hip prosthetics, and spine
[19]
[20]
volume reductions vary between 25% and 75% as values implants . The results also indicate that the mechanical
[21]
higher than 75% can jeopardize the design’s structural properties are directly related to the material volume as
Figure 5. Topology-optimized plates under compression conditions.
Figure 6. Topology-optimized plates under bending loading conditions.
158 International Journal of Bioprinting (2021)–Volume 7, Issue 3
