Laser 가공 시 발생하는 대변형 거동에 대한 FEM Simulation 적용가능성에 대한 연구

• 영문명: Study on the Applicability of FEM Simulation for the Large Deformation Behaviour in the Laser Material Processing
• 발행기관: 한국레이저가공학회
• 저자명: 홍석관(S. K. Hong) 강정진(J. J. Kang) 변철웅(C. W. Byun)
• 간행물 정보: 『한국레이저가공학회 학술대회 논문집』2008년도 춘계학술발표대회 논문집, 222~228쪽, 전체 7쪽
• 주제분류: 공학 > 기계공학
• 파일형태: PDF
• 발행일자: 2008.06.30

영문 초록

This study is aimed to analyse the laser glass bonding process numerically. Due to the viscoelastic behaviour of glass, the extremely large deformation of the frit seal is resulted continuously over the transition temperature, so that the thermal boundary condition be changed in the entire calculation process. The commercial FEM algorithm is not able to remesh the large geometrical boundary shape and to adapt the boundary conditions simultaneously. According to our manual adaptation of increasing the laser line intensity to 700mW/mm, it is possible to estimate the thermal glass bonding process under the fracture stress in principle. But it should be studied further in the case of high laser line intensity.