
Additive Manufacturing of hybrid meta-structures with regulated mechanical behaviors
Designing and altering the geometry of Metamaterials at a small scale and by having a precise control over their micro-architecture, improvements in additive manufacturing techniques have accelerated the manufacture of these mechanical metamaterials. In this study, different combinations of honeycomb (with a positive Poisson’s ratio) and re-entrant auxetic honeycomb (negative Poisson’s ratio) were designed with regulated mechanical responses, particularly to understand the stress-strain curves. The combinations included graded designs of Auxetic and conventional Unit cells featuring different Poisson ratios. Four types of graded designs including two linear, one striped and one radial design were used. Elongation test analysis was performed on SolidWorks to understand the mechanical behavior and validate it with the Universal testing machine (UTM) results. Each of the designs were fabricated using commercial resin and tested under tension. These results should confirm the existence of hybrid material properties under actuation. Notably, the proposed materials should exhibit exciting potential applications in medical devices, remote aerospace applications and soft robotics. This study also explores the damage tolerance of mechanical metamaterials, focusing on their unique properties and resilience against structural failures. It delves into innovative approaches for enhancing the durability and functionality of these materials in various applications, aiming to preserve structural cohesiveness and operational performance despite defects or deterioration, thereby addressing the traditional trade-off between strength and toughness. Future work will extend to 3D mechanical metamaterials in which selected designs will be chosen and fabricated to study the mechanical properties.
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Work Title | Additive Manufacturing of hybrid meta-structures with regulated mechanical behaviors |
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License | No Copyright - U.S. |
Work Type | Masters Culminating Experience |
Sub Work Type | Scholarly Paper/Essay (MA/MS) |
Program | Industrial Engineering |
Degree | Master of Science |
Publication Date | May 5, 2024 |
Deposited | October 12, 2024 |
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