Bionik Spline by matthek perhaps for a bionic B-spline here

[stefano2734]

Circle is not a good part to optimize a root.
So an optimized model or mesh is without sharp 90 degree edges.
A bionic curve is here better and a fast solution with robust quality.
See pdf with construction with triangles for a bionic B-Spline.
https://www.witpress.com/Secure/ejournals/papers/JDN0204001f.pdf

see products like
https://www.hellertools.com/en/products/hammer-drill-bits/product-detail/hellerproduct/bionic-pro-sds-plus-hammer-drill-bits
https://stem.festo.com/us/en/products-courses/bionics/bionics-kit/index.html