Geometrik optimizasyon ile uydu birincil yapısal parçalarının eklemeli imalat teknolojisine uygun tasarımı ile kütle azaltımı

Öz

Bu çalışmada, uydu birincil yapılarında kullanılan kütle azaltma yöntemleri ve optimizasyon teknikleri incelenmiş ve bu doğrultuda eklemeli imalat teknolojisine uygun yeni bir tasarım yöntemi geliştirilmiştir. Geliştirilen yöntem, uydu mekanik altyapısında kütle azaltmayı hedeflemektedir. Çalışmanın verimliliğini karşılaştırabilmek için öncelikle alüminyum sandviç panel kullanılarak bir uydu tasarlanmış, ardından iç hacim sabit tutularak optimizasyon çalışmaları gerçekleştirilmiştir. Panelin modal sertliğini artırmak için tasarıma federler eklenmiş, federlerin şekli şekil optimizasyonu, dağılımı ise gerinim enerjisi dağılımına bağlı boyut optimizasyonu ile belirlenmiştir. Sonuçlar, uydu panellerinin toplam ağırlığında %20’lik bir azalma sağlandığını göstermiştir. Ayrıca, tasarımda kullanılan basit geometriler sayesinde izotropik bir yapı korunmuş ve karmaşık analitik yöntemlere ihtiyaç duyulmadan analizler gerçekleştirilmiştir. Eklemeli imalat yöntemiyle uyumlu paneller, üretim süresini önemli ölçüde kısaltırken, sandviç panellerde görülen öngörülemeyen üretim hatalarını ortadan kaldırmıştır. Tasarımın temiz ve basit geometrisi, üretim sonrası özel temizlik süreçlerini gereksiz kılmıştır. Bu çalışma, uydu birincil yapıları için düşük ağırlıklı ve üretimi kolay alternatif bir çözüm sunmaktadır.

Anahtar Kelimeler

• Kütle azaltma
• Uydu birincil yapıları
• Eklemeli imalat
• Optimizasyon teknikleri
• Şekil optimizasyonu
• Boyut optimizasyonu

Mass reduction through the design of satellite primary structural components suitable for additive manufacturing technology using geometric optimization

Abstract

This study examines mass reduction methods and optimization techniques used in primary satellite structures and develops a new design method compatible with additive manufacturing technology. The proposed method aims to reduce mass in the mechanical infrastructure of satellites. To evaluate the efficiency of the developed approach, a satellite was initially designed using aluminum sandwich panels, and optimization studies were conducted while keeping the internal volume constant. Ribs were added to the panel design to enhance its modal stiffness. The shape of the ribs was determined through shape optimization, and their distribution was defined using size optimization based on strain energy distribution. The results demonstrated a 20% reduction in the total weight of satellite panels. Additionally, the use of simple geometries preserved isotropic structural properties, allowing for analyses without the need for complex analytical methods. Panels compatible with additive manufacturing significantly reduced production time and eliminated unforeseen manufacturing defects commonly encountered in sandwich panels. The clean and simple geometry of the design also eliminated the need for special post-production cleaning processes. This study provides a lightweight and easy-to-fabricatealternative solution for primary satellite structures

Keywords

• Mass reduction
• Satellite primary structures
• Additive manufacturing
• Optimization techniques
• Shape optimization

Kaynakça

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