Optimization of the design parameters of pressurized compound cylinders for equivalent stress and total cost

Year 2025, Volume: 31 Issue: 7

Mevlüt Aydın , Abdullah Çakan , Mevlüt Türköz

Abstract

The optimal design of compound cylinders is crucial due to their high-pressure load-bearing requirements and significant manufacturing costs. This study focuses on optimizing the design parameters of compound cylinders to achieve minimal equivalent stress and production costs. To this end, a weighted multi-objective Grey Wolf Optimization (GWO) algorithm was employed. Furthermore, the influence of design parameters on shrinkage pressure and the equivalent stresses of the inner and outer cylinders was analyzed using detailed statistical methods. As a result of the multi-objective optimization, two reference designs were considered for comparison: one prioritizing minimum stress and the other minimizing manufacturing cost. Both the design parameter levels and weight ratios were systematically optimized. Using the optimal weight ratios and the GWO method, the maximum equivalent stress in the inner cylinder increased by 20%, while the total cost was reduced by a factor of 2.75. Consequently, a design with sufficient structural reliability was achieved, significantly lowering the manufacturing costs of compound cylinders.

Keywords

Compound Cylinder , Design Parameter , Grey Wolf Algorithm , Multi-Objective-Optimization , Total Cost

Basınçlı Bileşik Silindirlerde Tasarım Parametrelerinin Eşdeğer Gerilme ve Toplam Maliyet Açısından Optimizasyonu

Abstract

Bileşik silindirlerin tasarımı, yüksek basınç taşıma gereksinimleri ve önemli üretim maliyetleri nedeniyle büyük önem taşımaktadır. Bu çalışma, bileşik silindirlerin tasarım parametrelerini, minimum eşdeğer gerilme ve üretim maliyeti elde edecek şekilde optimize etmeyi amaçlamaktadır. Bu doğrultuda, ağırlıklı çok amaçlı Bozkurt Optimizasyonu (BO) algoritması kullanılmıştır. Ayrıca, tasarım parametrelerinin arayüzey basıncı ve iç-dış silindirlerin eşdeğer gerilmeleri üzerindeki etkisi ayrıntılı istatistiksel yöntemlerle analiz edilmiştir. Çok amaçlı optimizasyon sonucunda, karşılaştırma amacıyla iki referans tasarım ele alınmıştır: biri minimum gerilmeye öncelik veren, diğeri ise üretim maliyetini en aza indiren tasarımdır. Hem tasarım parametre seviyeleri hem de ağırlık oranları sistematik olarak optimize edilmiştir. Optimum ağırlık oranları ve BO yöntemi kullanılarak, iç silindirdeki maksimum eşdeğer gerilme %20 artarken, toplam maliyet 2,75 kat azaltılmıştır. Böylece, yeterli yapısal güvenilirliğe sahip bir tasarım elde edilerek, bileşik silindirlerin üretim maliyeti önemli ölçüde düşürülmüştür.

Keywords

Bileşik Silindir , Tasarım Parametreleri , Bozkurt Algoritması , Çok Amaçlı Optimizasyon , Toplam Maliyet

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