Lattice Cell Assisted Topology Optimization of an Extendable Wing for Munition

Date

2025-01-01

Author

Aksoy, Buğra
Kayran, Altan

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This study focuses on developing a structural concept for an extendable wing for munitions using a lattice-cell-assisted approach. The process involves topology optimization followed by size optimization of the strut-based lattice cell radii. Initially, the topology optimization of the wing structure's design space is conducted using the Solid Isotropic Material with Penalization (SIMP) method to minimize compliance while adhering to a volume fraction constraint. Based on the resulting relative density distribution, the topology-optimized regions are populated with strut-based lattice structures. Subsequently, size optimizations for the lattice cell radii are performed using both single-objective and multi-objective functions. The optimized wing structures are then compared in terms of mechanical performance and weight. Results demonstrate that incorporating lattice cell structures enhances the mechanical performance of the wing. Furthermore, size optimizations using single and multi-objective approaches reveal comparable mechanical performances, leading to an overall weight reduction of approximately 17.5% through the two-level optimization process. Additionally, increasing the number of design variables during size optimization further improves the results, achieving a 36% reduction in the maximum stress in the wing structure with lattice cells.

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https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=105001048525&origin=inward
https://hdl.handle.net/11511/114391

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Department of Aerospace Engineering, Conference / Seminar