Task In the course of evolution, several fractal shell stiffeners have developed. Especially a higher number of fractal levels in the housings of the ammonoids can be observed. The aim of the present study was a mechanical analysis of fractal geometric shell stiffness compared to simpler solutions.
Fractals in ammonite shell stiffening results The finite element analysis of the abstract shell stiffeners showed that at external loads, especially point loads, the outer skin was supported better the more complex the outside of the septa was folded. The technical implementation of the structures examined requires additional abstractions in the future.
Recovery strategies The findings from the BMBF-feasibility study Ammolight were developed for different product ideas. This created a wide variety of recovery approaches. The presentation of results to the appropriate industrial partners as part of the study led to concrete project proposals, particularly in the areas of medical, electrical and automotive industries.
Perspectives Concrete prospects for further development in cooperation with companies have been established in particular in the automotive industry (RLE INTERNATIONAL GmbH and casolute GmbH). In the other areas adjustments to the production and specific cooperation agreements with industrial companies in the respective industries are planned.
Summary Fractal outer shell stiffeners and support structures often are integrated to a mechanical unit thus ensuring a very good, homogeneous stress distribution. Since this principle is realized in natural shells in many different variants, also feasible production technology solutions for various technical structures (electrical engineering, medical technology) could be developed.
