http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
유한요소해석을 통한 사출 성형된 도광판의 마이크로 패턴 전사성 예측
홍석관(S. K. Hong),강정진(J. J. Kang),윤경환(K. H. Yoon) 한국소성가공학회 2013 한국소성가공학회 학술대회 논문집 Vol.2013 No.5
Replication ratio of microfeatures on an injection-molded light guide plate (LGP) has a major influence on optical quality of a backlight unit (BLU). As the replication ratio of micro-feature is higher, the optical performance of BLU would be close to the design value. In order to investigate the optimal injection molding condition for LGP, a numerical study on the filling behavior of polymer melt was performed using finite element method. Simulation procedure consists of two steps. First, the pressure and temperature history data were exported from the macroscale flow simulation in which numerical domain is considered as 7 inch LGP geometry without microfeatures. Next, microscale flow simulation was performed using these data as boundary conditions. Microscale domain contains single cylindrical microfeature with a diameter of 30 ㎛ and a height of 14 ㎛ and nickel stamper with a thickness of 0.5 mm. Numerical results showed that predicted final height of microfeature and filling time at different positions agreed well with the experimental data.