BIAXIAL LOADING ANALYSIS OF LATTICE STRUCTURE FOR AIRCRAFT LITHIUM BATTERY APPLICATION

• Main Author: Rahsheita Rahim, Alifah
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/62024
• Institution: Institut Teknologi Bandung

Designing a crashworthy component is a crucial step in designing any transportation, including an aircraft. The use of lattice structure provides multiple benefits especially in the aerospace industry, as lattice structures are lightweight but still offer great strength. Furthermore, lattice structures can disperse heat and generate conformal cooling channels to control high temperatures when manufactured using additive manufacturing especially selective laser melting, making them ideal for use in aircraft electronics protection. This research attempts to improve the safety of aircraft operation along with its occupants by advancing the use of lattice structure in battery application. There are numerous geometries of lattice structure such as octet, FCC, BCC, Kagome, cube, tetrahedron, octahedron, etc. The goal of this research is establishing the optimum lattice geometry for biaxial loads. The lattice structures used in this study are cube, Kagome, octet and twisted. Each lattice geometry is subjected to five different angle placements which are; 5º, 10º, 15º, 20º, and 30º. The lattice structure geometry and angle placement that possesses the highest specific energy absorption (SEA) value is then used for application as a container for B787 aircraft battery. The results show that the cube lattice structure with a 5º placement possesses the highest SEA of 129.32 MPa. Therefore, with a lower angle placement the higher its SEA will be and the failure stress of the battery will be lower. After applying the cube lattice structure as a battery containment, it shows that with a lower angle placement, the battery endures less stress when compared to a higher angle placement. While the advancement of lattice structure and its application in numerous industries is a long-range goal, the author trusts that it is a worthwhile pursuit to ensure safety operation in the aircraft industry.