Georgina Sanchez
Research Mentor(s): Royan D’Mello
Mentor Department: Aerospace Engineering
Authors:
Session: Session 1 (9:00am – 9:50am)
Presentation Type: Poster 61
Abstract
Tubes made with a stack of Kresling origami-based functional structures make it possible to induce cross-sectional rotations along the tube when the tube is loaded under axial compression. The goal of the project is to design the novel tubes with Kresling units, fabricate them using 3D printers, and then perform compression testing using loading frames to understand collapse and rotation response. The nonlinear material properties from the 3D printer material are characterized using tensile tests on dogbone specimens printed using the same 3D printer. Finite element simulations on the Kresling units, with varying geometric parameters, and with measured wall material properties, are being performed to get insights on the mechanical response. The results from these simulations will help construct a mathematical model to quickly and efficiently relate the geometric parameters of the tube’s functional Kresling unit to its load and rotation response. The model has the potential to serve as a guide for creatively assessing the behavior of tubular structures, with stacks of Kresling units in series, having a desired compression-torsion coupling response without relying on more finite element simulations and physical testing. Moreover, one of the designs with stacks of Kresling units in series will be tested in the lab and the results will be compared with finite element simulations on a model based on the same structure. The overarching goal of the research is to be able to quickly design a tube to have a pre-defined compression-torsion coupling response and also to achieve desired energy absorption.
