Eventos Anais de eventos
MECSOL 2019
7th International Symposium on Solid Mechanics
A Sequential Optimization Approach for Honeycomb Crashworthiness using Radial Basis Functions
Submission Author:
Matheus Rodrigues , PR
Co-Authors:
Matheus Rodrigues, Marco Antonio Luersen
Presenter: Marco Antonio Luersen
doi://10.26678/ABCM.MECSOL2019.MSL19-0027
Abstract
Optimization of materials and structures for energy absorption has become an important design topic because of environmental and safety issues. Within this context, this paper proposes a methodology to optimize the out-of-plane crash behavior of honeycombs, well-known structures for their high-energy absorption capacity and low weight. This methodology combines radial basis functions (RBF) with the expected improvement method. Cell size, cell shape and thickness are the design variables. Results show a significant improvement compared to the initial design in terms of the specific energy absorbed, while the peak force values are maintained at low levels. Moreover, the hexagon cell shape seems to have a higher out-of-plane resistance compared to rectangle and auxetic cells.
Keywords
Optimization, crash, honeycomb, Radial basis functions
