Topology Optimization of an Aircraft Bracket with a Multi-Criteria Approach

Authors : Melih Canlıdinç
Pages : 318-326
Doi:10.52795/mateca.1811365
View : 110 | Download : 225
Publication Date : 2025-12-30
Article Type : Research Paper
Abstract :In the aviation industry, lightweight design has long been central to structural efficiency. Reducing weight reduces fuel consumption and increases overall performance. Metal additive manufacturing has made it possible to produce lightweight components with complex geometries. However, the vibration behavior of parts manufactured with these methods also requires careful consideration. Maintaining or increasing the natural frequency is critical, especially for parts under dynamic loads, such as engine mounting brackets. Increasing the natural frequency reduces the risk of resonance and extends fatigue life. Topology optimization stands out as an effective design approach in this context. This method reduces weight and increases strength by optimizing material distribution under certain constraints. This study examines the topology optimization process of an aircraft engine bracket manufactured from Ti-6Al-4V material, performed using the SIMP method, and the vibration behavior of the optimized part. The main optimization goal in this process was to maintain and maximize the natural frequency, while criteria for volumetric/mass reduction were also applied by improving strength. Static and modal analysis results of the bracket obtained after optimization revealed a 32.5% volumetric/mass reduction for the optimized bracket compared to the baseline bracket, while von Mises stress values decreased by 12.2%. At natural frequency, the first mode of the optimized bracket increased by 5.11%, while the other modes increased by 8-15%. The results demonstrate that the design is successful in terms of both mass reduction and dynamic performance. The integration of topology optimization and additive manufacturing holds great potential for the development of lighter and more durable components in future aerospace structures.
Keywords : Braket, SIMP metodu, doğal frekans, topoloji optimizasyonu, Ti6Al4V

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