PRODUCTION AND CHARACTERIZATION OF SIMPLE, FACE-CENTERED AND DIAMOND CUBIC LATTICES BY FUSED DEPOSITION MODELING USING POLYLACTIC ACID

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2022-8-22

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DÖNMEZ, Arif

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This thesis focuses on the characterization of simple, face-centered and diamond cubic lattices produced by fused deposition modeling (FDM) using polylactic acid (PLA) under uniaxial compression loading condition. Four design parameters were set for each cubic lattice: with radius, without radius, hollow truss, and hollow and with radius. Test items were manufactured for all designed structures. Since changing the manufacturing direction changes the mechanical properties of cubic lattices, the tests were done both through the manufacturing and non-manufacturing directions of the cubic lattices. Based on the data obtained from tests, stress strain diagrams were prepared for each parameter and the manufacturing direction. Nonlinear material and nonlinear geometrical finite element analysis were performed and stress strain diagrams were created based on the results of the finite element analysis. Also, strength and weight reduction calculations were done to determine the ultimate tensile strength point for each lattice type. As those calculations show, manufacturing direction of cubic lattices has a strong effect on mechanical properties of simple, face-centered and diamond cubic lattices under uniaxial compression loading condition.

Subject Keywords

FDM method, simple, face-centered and diamond cubic lattices

URI

https://hdl.handle.net/11511/99376

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Graduate School of Natural and Applied Sciences, Thesis

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Citation Formats

A. DÖNMEZ, “PRODUCTION AND CHARACTERIZATION OF SIMPLE, FACE-CENTERED AND DIAMOND CUBIC LATTICES BY FUSED DEPOSITION MODELING USING POLYLACTIC ACID,” M.S. - Master of Science, Middle East Technical University, 2022.