DED YÖNTEMİYLE EKLEMELİ İMALATTA TARAMA YÖNÜ VE LAZER GÜÇ YOĞUNLUĞUNUN TERMOMEKANİK DAVRANIŞ ÜZERİNE ETKİLERİNİN SAYISAL İNCELENMESİ

Muhammet İbrahim Aşçı; Mehmet Ermurat

doi:10.17780/ksujes.1675994

EN TR

NUMERICAL INVESTIGATION OF THE EFFECTS OF SCANNING DIRECTION AND LASER POWER DENSITY ON THERMOMECHANICAL BEHAVIOR IN ADDITIVE MANUFACTURING USING THE DED METHOD

Abstract

In this study, the effects of different scanning direction and laser power density conditions on the thermomechanical behavior of metal additive manufacturing via the Directed Energy Deposition (DED) method were investigated through numerical simulations. A three-dimensional thermomechanical analysis model was developed using Simufact Welding software to evaluate the temperature distribution, thermal stresses, and plastic deformation behavior under two scanning directions and laser power densities. The results revealed that both scanning directions and laser parameters significantly influence temperature gradients and the accumulation of residual stress fields. In particular, more homogeneous temperature distributions were achieved at lower laser power levels, which in turn resulted in reduced residual stresses. The findings emphasize that the optimization of scanning direction and energy input parameters is essential to ensure manufacturability and enhance the structural integrity of parts fabricated through the DED process.

Keywords

DED YÖNTEMİYLE EKLEMELİ İMALATTA TARAMA YÖNÜ VE LAZER GÜÇ YOĞUNLUĞUNUN TERMOMEKANİK DAVRANIŞ ÜZERİNE ETKİLERİNİN SAYISAL İNCELENMESİ

Öz

Bu çalışmada, Lazer ile Yönlendirilmiş Enerji Biriktirme (DED) yöntemiyle gerçekleştirilen metal eklemeli imalat sürecinde farklı tarama yönü ve lazer güç yoğunluğu koşullarının termomekanik davranış üzerindeki etkileri sayısal olarak incelenmiştir. Çalışma kapsamında Simufact Welding yazılımı kullanılarak geliştirilen 3B termomekanik analiz modeliyle, iki farklı tarama yönü ve lazer güç yoğunlukları altında sıcaklık dağılımı, ısıl gerilmeler ve plastik deformasyon davranışları analiz edilmiştir. Elde edilen sonuçlar, tarama yönlerinin ve lazer parametrelerinin sıcaklık gradyanlarını ve birikimli gerilme alanlarını önemli ölçüde etkilediğini göstermiştir. Özellikle düşük lazer gücünün kullanıldığı durumlarda daha homojen sıcaklık dağılımı elde edildiği, bu durumun da daha düşük artık gerilmelerle sonuçlandığı görülmüştür. Çalışma, DED sürecinde parçanın üretilebilirliğini sağlamak ve yapısal bütünlüğünü artırmak için tarama yönü ve enerji yoğunluğu parametrelerinin optimize edilmesi gerektiğini ortaya koymaktadır.

Anahtar Kelimeler

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Details

Primary Language

Turkish

Subjects

Numerical Methods in Mechanical Engineering , Mechanical Engineering (Other) , Additive Manufacturing

Journal Section

Research Article

Authors

Muhammet İbrahim Aşçı ^*
0000-0001-8673-3325
Türkiye

Mehmet Ermurat
0000-0002-5661-2108
Türkiye

Publication Date

September 3, 2025

Submission Date

April 14, 2025

Acceptance Date

May 26, 2025

Published in Issue

Year 2025 Volume: 28 Number: 3

DOI

https://doi.org/10.17780/ksujes.1675994

IZ

https://izlik.org/JA38HB26TB

Cite

RIS / Bibtex

APA

Aşçı, M. İ., & Ermurat, M. (2025). DED YÖNTEMİYLE EKLEMELİ İMALATTA TARAMA YÖNÜ VE LAZER GÜÇ YOĞUNLUĞUNUN TERMOMEKANİK DAVRANIŞ ÜZERİNE ETKİLERİNİN SAYISAL İNCELENMESİ. Kahramanmaraş Sütçü İmam Üniversitesi Mühendislik Bilimleri Dergisi, 28(3), 1375-1385. https://doi.org/10.17780/ksujes.1675994