PMID- 34641211
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20211016
IS  - 2073-4360 (Electronic)
IS  - 2073-4360 (Linking)
VI  - 13
IP  - 19
DP  - 2021 Oct 2
TI  - Material Modeling of PMMA Film for Hot Embossing Process.
LID - 10.3390/polym13193398 [doi]
LID - 3398
AB  - This study provides an analysis of the hot embossing process with poly methyl 
      methacrylate (PMMA) film. The hot embossing process engraves a fine pattern on a 
      flexible film using a stamp, applied heat and pressure. As the quality of the 
      embossing pattern varies according to various process variables, the mechanism of 
      making the embossed shape is complicated and difficult to analyze. Therefore, 
      analysis takes much time and cost because it usually has to perform a lot of 
      experiments to find an appropriate process condition. In this paper, the hot 
      embossing process was analyzed using a computational analysis method to quickly 
      find the optimal process. To do this, we analyzed the embossing phenomenon using 
      the finite element method (FEM) and arbitrary Lagrangian-Eulerian (ALE) re-mesh 
      technique. For this purpose, we developed a constitutive model considering the 
      strain, strain rate, temperature-dependent stress and softening of the flexible 
      film. Work hardening, strain softening, and temperature-softening behavior of 
      PMMA materials were well described by the proposed method. The developed 
      constitutive model were applied in the embossing analysis via user-subroutine. 
      This proposed method allowed a precise analysis of the phenomenon of film change 
      during the hot embossing process.
FAU - Yun, Dongwon
AU  - Yun D
AUID- ORCID: 0000-0003-2254-5274
AD  - Department of Robotics Engineering, Daegu Gyeongbuk Institute of Science and 
      Technology, 333 Techno jungang-daero Hyeonpung, Dalseong-gun, Daegu 42988, Korea.
FAU - Kim, Jong-Bong
AU  - Kim JB
AUID- ORCID: 0000-0002-7854-293X
AD  - Department of Mechanical and Automotive Engineering, Seoul National University of 
      Science and Technology, 232 Gongneung-ro, Nowon-Gu, Seoul 01811, Korea.
LA  - eng
PT  - Journal Article
DEP - 20211002
PL  - Switzerland
TA  - Polymers (Basel)
JT  - Polymers
JID - 101545357
PMC - PMC8512687
OTO - NOTNLM
OT  - Poly methyl methacrylate
OT  - constitutive model
OT  - embossing
OT  - finite element method
OT  - polymer
COIS- The authors declare no conflict of interest.
EDAT- 2021/10/14 06:00
MHDA- 2021/10/14 06:01
PMCR- 2021/10/02
CRDT- 2021/10/13 01:13
PHST- 2021/08/30 00:00 [received]
PHST- 2021/09/25 00:00 [revised]
PHST- 2021/09/28 00:00 [accepted]
PHST- 2021/10/13 01:13 [entrez]
PHST- 2021/10/14 06:00 [pubmed]
PHST- 2021/10/14 06:01 [medline]
PHST- 2021/10/02 00:00 [pmc-release]
AID - polym13193398 [pii]
AID - polymers-13-03398 [pii]
AID - 10.3390/polym13193398 [doi]
PST - epublish
SO  - Polymers (Basel). 2021 Oct 2;13(19):3398. doi: 10.3390/polym13193398.