Author(s)

G.R. Bruder, C. Mattheck & M. Teschner

Abstract

For the purposes of shape optimization of engineering components a computer program named SKO (Soft Kill Option) was developed at Forschungszentrum Karlsruhe based on the Finite- Elements-Method. The optimization process is similar to the biomechanical growth mechanism of bones. It enables the user to find a lightweight shape for a structure according to given boundaries and a given loading situation. In a FE-model the Young's moduli are modified step by step according to the calculated von-Mises stress distribution. The higher the stress is in an element, the higher the Young's modulus of that element becomes (up to a given limit). The lower the stress is, the lower the Young's modulus becomes, until it is so low, that the element performs no longer a stress-bearing role. It is then ,,killed". This method is able t

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