FDM을 이용한 레이저 절단 공정에서의 절단 메카니즘 및 절단폭의 해석 A Study on Cutting Mechanism and Heat Transfer Analysis in Laser Cutting Process

A two-dimensional transient heat transfer model for reactive gas assisted laser cutting process with a moving Gaussian heat source is developed using a numerical finite difference technique. The kerf width, melting front shape and temperature distribution were calculated by using the boundary-fitted coordinate system to handle the ejection of workpiece material and heat input from reaction and evaporation. An analytical solution for cutting front movement was adopted and numerical simulation was performed to calculate the temperature distribution and melting front thickness. To calculate the moving velocity of cutting front, the normal distribution of the cutting gas velocity was used. The kerf width was revealed to be dependent on the cutting velocity, laser power and cutting gas velocity.
Publisher
대한기계학회
Issue Date
1993-01
Language
KOR
Citation

대한기계학회 논문집A, v.17, no.10, pp.2418 - 2425

ISSN
1226-4873
URI
http://hdl.handle.net/10203/64842
Appears in Collection
ME-Journal Papers(저널논문)
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