CFD MODEL OF LASER ADDITIVE MANUFACTURING PROCESS OF CYLINDERS
| Autor: | El-Hachemi Amara, Sisa Pityana, Karim Kheloufi, Nana Kwamina Kum Arthur, Toufik Tamsaout |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
0209 industrial biotechnology
Liquid metal Engineering lcsh:T55.4-60.8 Mechanical engineering laser additive manufacturing 02 engineering and technology Computational fluid dynamics 01 natural sciences ti-6al-4v cylindrical coupons Industrial and Manufacturing Engineering law.invention 010309 optics 020901 industrial engineering & automation law 0103 physical sciences Deposition (phase transition) lcsh:Industrial engineering. Management engineering Computer simulation business.industry Laser cylindrical geometry Lens (optics) Scientific method business Energy (signal processing) |
| Zdroj: | South African Journal of Industrial Engineering, Vol 28, Iss 3, Pp 178-187 (2017) South African Journal of Industrial Engineering, Volume: 28, Issue: 3, Pages: 178-187, Published: 2017 |
| Popis: | A theoretical approach based on a numerical simulation using experimental data is proposed as a contribution to the study of laser-based additive manufacturing by direct energy deposition (DED). The aim is to simulate the stages of layer-by-layer build-ups by considering the induced generated liquid metal in a cylindrical geometry. For normal atmospheric conditions, a 3D model is developed using the finite volumes method to solve the governing equations of the occurring fluid flows and heat transfers. The model is based on the experimental work performed on the LENS system at the Council for Scientific and Industrial Research's (CSIR) National Laser Centre (NLC), where Ti-6Al-4V cylindrical coupons are laser printed and characterised. 'n Teoretiese benadering, gebaseer op 'n numeriese simulasie wat van eksperimentele data gebruik maak, is voorgestel as 'n toevoeging tot die studie van lasergebaseerde toevoegings-vervaardiging met direkte energie deponering. Die doel is om die verskillende stadiums van laag-vir-laag opbou te simuleer deur die geïnduseerde vloeibare metaal in 'n silindriese geometrie te oorweeg. Vir normale atmosferiese toestande is 'n driedimensionele model onwikkel om die beherende vergelykings van die vloei en hitteoordrag op te los met behulp van die eindige volumes metode. Die model is gebaseer op eksperimentele werk wat deur die LENS sisteem by die Wetenskaplike en Nywerheids-navorsingsraad (WNNR) se Nasionale Lasersentrum gedoen is. Silindriese Ti-6Al-4V koepons is lasergedruk en karakteriseer. |
| Databáze: | OpenAIRE |
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