Date of Award
2023
Degree Type
Thesis
Degree Name
Master of Science in Mechanical Engineering and Applied Mechanics
Department
Mechanical, Industrial and Systems Engineering
First Advisor
Helio Matos
Second Advisor
Arun Shukla
Abstract
This study is an experimental investigation aimed at better understanding the behavior of gyroids under dynamic loads and investigating their optimization potential through the adjustment of key control variables. The response of a standard gyroid and six variations on it were studied under nondestructive cyclic compression and destructive impact tests. These experiments were performed at the University of Rhode Island in the Dynamic Photomechanics Laboratory (DPML) for all seven sample types. High-speed photography was used to capture the behavior of each sample under a destructive impact load to provide a qualitative comparison to similar experiments conducted by other researchers. Semi-static compression experiments were performed and recorded to improve the qualitative description of the gyroids’ failure modes. Acoustic transmissibility tests produced force curves that showed neither band gaps nor regions of resonance except for the 6-Period gyroid sample, which displayed resonance behavior in the 1-200 Hz frequency band. Dynamic impact tests showed a significant variation in structural properties. Varying the ellipticity produced interesting results that enabled the standard gyroid to emulate the behavior of other variation categories. High-speed imaging showed that gyroids manufactured from photopolymers have a different failure mode from gyroids manufactured from metals. The results showed that changing the control variables produced markedly different outcomes under testing. Varying unit cell ellipticity showed promise for optimization applications.
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
Recommended Citation
Sapronov, Alexander, "MECHANICAL BEHAVIOR OF GYROIDS UNDER DYNAMIC LOADS" (2023). Open Access Master's Theses. Paper 2323.
https://digitalcommons.uri.edu/theses/2323