Publication Date
2023
Document Type
Thesis
Committee Members
Ahsan Mian, Ph.D. (Advisor); Sheng Li, Ph.D. (Committee Member); Raghavan Srinivasan, Ph.D., P.E. (Committee Member)
Degree Name
Master of Science in Mechanical Engineering (MSME)
Abstract
The focus of this study was to select triply periodic minimal surface (TPMS) structures made of 3D-printed polymers. The primary variables in this study were: TPMS shape, lattice volume ratio, and lattice material. Vibration absorption was characterized by damping ratio via transmissibility at the system’s natural frequency. The vibration testing was performed using an electro-dynamic shaker, a known mass, an input/control accelerometer, and an output/response accelerometer. The 3D-printed absorber/lattice was mounted to the shaker baseplate and a mass will be mounted on top of the absorber. One accelerometer will be mounted to the shaker baseplate and the other will be mounted to the top of the mass. A broadband frequency sweep was the test type for the vibration absorption characterization in this study. Additional testing was performed to help further characterize other properties of the lattice structure. Monotonic load testing was performed to calculate the stiffness of the lattice. This information was used to determine a suitable mass to use for vibration testing. The results show a clear separation in the damping performance of PLA vs TPU, with TPU having the better performance.
Page Count
74
Department or Program
Department of Mechanical and Materials Engineering
Year Degree Awarded
2023
Copyright
Copyright 2023, all rights reserved. My ETD will be available under the "Fair Use" terms of copyright law.
