Eventos Anais de eventos
MECSOL 2019
7th International Symposium on Solid Mechanics
Study of an Origami Crashbox Through Metamodels
Submission Author:
José Eduardo Corrêa Santana e Silva , SP
Co-Authors:
José Eduardo Corrêa Santana e Silva, Larissa Driemeier, Marcilio Alves
Presenter: José Eduardo Corrêa Santana e Silva
doi://10.26678/ABCM.MECSOL2019.MSL19-0020
Abstract
An Energy Absorption Device is a structure created with the main objective of absorbing impact load energy, reducing or even preventing it's deformation. Usually placed in front of another structure, the Thin-Walled Tube is commonly used on the automotive industry, to protect the body from deformation during an impact loading. This work proposes to optimize an Origami Crashbox, a Thin-Walled Tube in which the sides are shaped with origami patterns, using DOE and Metamodeling techniques. The main idea is to use the results of a DOE run to create an approximation of the response variable over the design space. Then an optimization is performed on the metamodel, pointing us towards the set of parameters which will give the best performance of the objective function. The output responses will be evaluated according to the energy absorbed by mass unit and the decrease of initial peak force over the mean crushing force - the objective functions which will guide the optimization. In this paper, a Polygon-sided crashbox will be optimized, considering the following parameters: number of polygonal sides, wall thickness, quantity of modules, side length, crest length, and tampering modes. It concludes comparing the optimized options to a crashbox from industry.
Keywords
Optimization, Metamodels, engineering, Surrogate model, DOE, Design of Experiment (DOE), origami-inspired devices, crashbox, FEM, PamCRASH, modeFRONTIER
