Proceedings of the Korean Society for Technology of Plasticity Conference (한국소성가공학회:학술대회논문집)
- 2009.05a
- /
- Pages.70-73
- /
- 2009
Experimental and Numerical Study on the Viscoelastic Property of Polycarbonate near Glass Transition Temperature for Micro Thermal Imprint Process
열방식 마이크로 임프린트 공정을 위한 고분자 재료의 수치적 모델링
- Lan, Shuhuai ;
- Lee, Hey-Jin ;
- Lee, Hyoung-Wook ;
- Song, Jung-Han ;
- Lee, Soo-Hun ;
- Ni, Jun ;
- Lee, Moon-G.
- 란 슈하이 (아주대학교, 상해교통대학교) ;
- 이혜진 (한국생산기술연구원) ;
- 이형욱 (국립충주대학교) ;
- 송정한 (한국생산기술연구원) ;
- 이수훈 (아주대학교, 기계공학부) ;
- 준니 (미시건대학교) ;
- 이문구 (아주대학교, 기계공학부)
- Published : 2009.05.07
Abstract
The aim of this research is to obtain a numerical material model for an amorphous glassy polymer, polycarbonate (PC), which can be used in finite element analysis (FEA) of the micro thermal imprint process near the glass transition temperature. An understanding of the deformation behavior of the PC specimens was acquired by performing tensile stress relaxation tests. The viscoelastic material model based on generalized Maxwell model was introduced for the material near Tg to establish the FE model based on the commercial FEA code ABAQUS/Standard with a suitable set of parameters obtained for this material model from the test data. Further validation of the model and parameters was performed by comparing the analysis of FE model results to the experimental data.