Publication Date
2022
Document Type
Thesis
Committee Members
Ahsan Mian, Ph.D. (Committee Chair); Anthony Palazotto, Ph.D. (Committee Co-Chair); Newaz Golam, Ph.D. (Committee Member); Raghavan Srinivasan, Ph.D., P.E. (Committee Member); Shu Schiller, Ph.D. (Other)
Degree Name
Master of Science in Mechanical Engineering (MSME)
Abstract
Surface-based lattice structures such as triply periodic minimal surface (TPMS) lattices are lightweight structures that are widely being investigated for applications in automotive, aerospace, military, railway, and naval structures. Due to the recent advent of three-dimensional (3D) printing (3DP) technologies, architected cellular materials such as surface- or strut-based periodic lattice cell structures have emerged as a unique class of lightweight metamaterials. These materials possess enhanced strength to weight ratio, high stiffness, exceptional capabilities in reducing noise and vibration, insulating heat, and effective impact energy absorption. Understanding the impact behavior of such materials are important so that they can be reliably employed in different applications such as helmets, armoring systems, impact absorbers, etc. The goal of this study is to replicate low-velocity impact scenarios, like that which is seen in the industry field. The main points of focus being impact response, energy absorption capability, and amount of indentation. The TMPS lattices used for this study will consist of primitive, gyroid, and diamond structures. First, the behavior of the three TPMS lattices is explored through low velocity impact loading. These results are then compared and summarized for the best performing lattice. Next, compression testing is done on a diamond TPMS lattice structure to create a homogeneous material to be used in computational modeling of impact scenario using Abaqus. The finite element modeling results are then compared with the experimental data, and further in-depth analysis of deformation history is performed.
Page Count
115
Department or Program
Department of Mechanical and Materials Engineering
Year Degree Awarded
2022
Copyright
Copyright 2022, all rights reserved. My ETD will be available under the "Fair Use" terms of copyright law.
