The lattice structure design and strength analysis for a 3D printed material

• Main Author: Xue, Mengmeng
• Other Authors: Xiao Zhongmin
• Format: Thesis-Master by Coursework
• Language: English
• Published: Nanyang Technological University 2024
• Subjects: Engineering; 3D printing
• Online Access: https://hdl.handle.net/10356/174539
• Institution: Nanyang Technological University

Multi-Metal Additive Manufacturing (MAM) technology boasts advantages such as flexible material combinations and complete machine manufacturing, thereby offering more opportunities for lightweighting, noise reduction, and thermal/structural stability optimization in high-performance aerospace components. However, owing to the limited reaction and mutual solubility between two alloying elements, as well as thermal mismatch at the interface, parts fabricated through multi-material additive manufacturing tend to be susceptible to stress concentration and thermal mismatch. To advance beyond the design limitations of structural lightweighting, it is imperative to select a novel lattice structure that integrates both stiffness and toughness, thereby enabling the bionic design of a hierarchical, bending, and tensile-dominated hybrid lattice structure. This dissertation concentrates on investigating high-strength lattice structures within the realm of additive manufacturing. The research encompasses the design and modeling of lattice structures, along with experimental procedures and strength calculations. This dissertation primarily discusses new lattice structures design such as the Tetrahedron, Cube, Pentagonal Prism and Hexagonal Prism. Following the modeling of these structures using Solidworks, simulations were computed using ANSYS Workbench software, and compressive strength tests.