Design of shell-based honeycomb structures armadillo for a light helicopter
DOI:
https://doi.org/10.46842/ipn.cien.v27n2a05Keywords:
crashworthiness, honeycomb, finite element methodAbstract
Currently the application of biological patterns within the design of mechanical systems is increasing due to its evolutionary success. In this sense, after millions of years of evolution, nature has provided optimized structures for living beings to ensure their survival in the face of climatic changes or predators. Based on the above, this article describes the design and numerical evaluation of honeycomb-type structures based on the shell of an armadillo. The structures were built with 6063-T5 aluminum and evaluated through comprehension tests using Abaqus finite element software. During the study special emphasis was placed on the cross-sectional design of the structures and its effect on impact resistance. In this sense, five different structures with polygonal and triangular patterns were designed. According to the results obtained, the structure with a hexagonal/circular base showed a better performance in terms of crushing force efficiency (CFE) with a value of 0.78 - the above was confirmed by obtaining an equal specific energy absorption value. at 20.59 J/r. Finally, with the findings found, an energy absorption panel was designed for a light aircraft.
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