Bionik Spline by matthek perhaps for a bionic B-spline for roots in gears, bolts and more

[stefano2734]

Circle is not a good part to optimize a root.
A bionic curve is here better.
See pdf with construction with triangles for a bionic B-Spline.
https://www.witpress.com/Secure/ejournals/papers/JDN0204001f.pdf
interesting for gears, rounding, screws, bolts and more.

https://www.isw.uni-stuttgart.de/en/institute/highlights/bionic-constructing/

some firms does have bionic curves in their products for more performance and durability.

https://hilcovision.com/f/bionic-thumb
https://stem.festo.com/us/en/products-courses/bionics/bionics-kit/index.html
https://www.hellertools.com/en/products/hammer-drill-bits/product-detail/hellerproduct/bionic-pro-sds-plus-hammer-drill-bits
https://www.icthealth.org/news/new-bioceramic-screw-revolutionize-setting-of-complex-bone-fractures
https://www.researchgate.net/publication/386303517_Bionic_design_and_optimization_of_cutting_tools_Applications_and_processability