대한기계학회:학술대회논문집 (Proceedings of the KSME Conference)
- 대한기계학회 2000년도 춘계학술대회논문집B
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- Pages.252-257
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- 2000
반복 성형공정에서 금형 열사이클 해석을 위한 효과적 방법 및 TV유리 공정에의 적용
An Efficient Method for Mold Thermal Cycle Analysis in Repeated Forming Process and its Application to TV Glass Process
- 발행 : 2000.04.20
초록
An efficient method is developed for mold thermal cycle analysis in repeated forming process, which is well suited to the analysis in TV glass production. plunger, which is a mold to press-form the glass, undergoes temperature fluctuation during a cycle due to the repeated contact and separation from the glass, which attains a cyclic steady state in the end. If analyzed straightforwardly of this problem, it leads to more than 80 cycles to get reasonable solution, and it is yet hard to setup stopping creteria due to extremely slow convergence. An exponential fitting method is proposed to solve the problem, where an exponential function is found to best approximate temperature values of 3 consecutive cycles, and new cycle is restarted with the function value at infinite time. From numerical implementation, it is found that the method reduces the number of cycles dramatically to only
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