Topology Optimization of a Composites Frame Structure considering ply orientation for MALE UAV

I B Wiranto (1Research Center for Process and Manufacturing Industry Technology, BRIN)
S O Saraswat (Research Center for Process and Manufacturing Industry Technology, BRIN)
I R Alfikri (Research Center for Process and Manufacturing Industry Technology, BRIN)
Chairunnisa (Research Center for Energy Conversion and Conservation, BRIN)
A Aribowo (Research Center for Aeronautics Technology, BRIN)

Jurnal Sains Materi Indonesia
Vol. 24 No. 1 (2022)

This research employs the Finite element method to optimize the frame structure of a Medium Altitude Long Endurance (MALE) Unmanned Aerial Vehicle (UAV). The material used in this study is a unidirectional carbon fiber stacked in a specific sequence. The topology optimization process is conducted to achieve a lightweight structure whilst maintaining its integrity. The design constraint is set to reduce 50% weight and minimize the strain energy. The benchmark phase was performed while considering a previously done study to validate the proposed method. The results of this study have successfully reduced 34% (0.581 kg) weight of frame structure. First failure predicition study using Hashin criterion, shows the first failure occurred in the matrix of Ply-2 at 9000 N.