LAZER TOZ YATAĞI FÜZYON YÖNTEMI ILE ÜRETILMIŞ ÇOKLU MORFOLOJI KAFES YAPILARININ BOYUTSAL SAPMASININ TERMOMEKANIK SIMÜLASYONLARA BAĞLI NITELIKSEL BIR KARŞILAŞTIRMASI

Yıl 2024, Sayı: 717, 643 - 658, 27.12.2024

Orhan Gülcan , Kadir Günaydın , Ugur Simsek , Cemal Efe Gayir

Öz

Çoklu morfoloji kafes yapılar, mühendislik uygulama ihtiyaçlarına göre farklı konfigürasyonlardaki farklı tipteki kafes yapılarının oluşturduğu kompozit kafes yapılarıdır. Bu tip kafesler, başta lazer toz yatağı füzyon prosesi olmak üzere, eklemeli imalat yöntemleriyle üretilebilir. Ancak bu bileşenlerin imalatında harcanan yüksek maliyet ve zaman nedeniyle, üretilen parçaların özelliklerinin imalattan önce sayısal yöntemlerle tahmin edilmesi gerekmektedir. Bu çalışma, lazer toz yatağı füzyon prosesi ile üretilen Schoen Gyroid, Schwarz Diamond, Schwarz Primitive, Schoen FRD ve Neovius topolojilerinden oluşan çoklu morfoloji kafes yapılarının boyutsal sapmasının termomekanik simülasyonlar yoluyla niteliksel olarak tahmin edilmesine odaklanmıştır. Karşılaştırmalar sayısal çalışma sonuçlarına göre yapıldığından sadece niteliksel değerlendirmeler yapılmıştır. Bu çalışmada incelenen çoklu morfoloji kafes yapılar arasında, merkezde Schoen FRD topolojisi ve dış bölgede Schwarz Primitive topolojisi olan yapı en düşük sapmaları gösterirken, merkezde Schoen FRD topolojisi ve dış bölgede Schwarz Diamond topolojisi olan yapı en yüksek sapmaları göstermiştir. Ayrıca dış bölgeye Schoen FRD veya Schwarz Primitive topolojilerinin eklenmesinin azami sapmaları azalttığı, Schoen Gyroid veya Schwarz Diamond topolojilerinin eklenmesinin ise azami sapmaları arttırdığı gösterilmiştir.

Anahtar Kelimeler

Füzyon yöntemi, çoklu morfoloji, kafes yapısı, boyutsal sapma, termomekanik simülasyon

A QUALITATIVE COMPARISON OF DIMENSIONAL DEVIATION OF LASER POWDER BED FUSION PROCESSED MULTI MORPHOLOGY LATTICE STRUCTURES BASED ON THERMOMECHANICAL SIMULATIONS

Öz

Multi morphology lattices are composite lattice structures formed by different types of lattice structures in different configurations based on engineering application needs. These types of lattices can be manufactured with additive manufacturing modalities, specifically laser powder bed fusion process. However, due to the high cost and time spent on manufacturing these components, it is necessary to predict the properties of manufactured parts before build with numerical methods. This study focused on prediction of dimensional deviation of laser powder bed fusion produced multi morphology lattice structures composed of Schoen Gyroid, Schwarz Diamond, Schwarz Primitive, Schoen FRD and Neovius topologies via thermomechanical simulations qualitatively. Since the comparisons were made based on numerical study results, only qualitative assessments were performed. Among multi morphology lattices investigated in the present study, Schoen FRD topology at the center and Schwarz Primitive topology at the outer region showed the lowest deviations and Schoen FRD topology at the center and Schwarz Diamond topology at the outer region showed the highest deviations. It was also shown that adding Schoen FRD or Schwarz Primitive topologies at the outer region reduces the max. deviations, and Schoen Gyroid or Schwarz Diamond topologies increases the max. deviations.

Anahtar Kelimeler

Fusion method, multi morphology, lattice structure, dimensional deviation, thermomechanical simulation

Kaynakça

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