Elastomers and Composites

The Rubber Society of Korea (한국고무학회)
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A Study on the Comparison of two and Three Dimensional Computer Simulations in Injection Molding

사출성형의 2차원 및 3차원 해석의 비교에 관한 연구

  • Park, Jae Woong (Department of Mechanical System Design Engineering, Seoul National University of Science and Technology) ;
  • Ahn, Ji Hye (Department of Mechanical System Design Engineering, Seoul National University of Science and Technology) ;
  • Park, Yong Min (Department of Mechanical System Design Engineering, Seoul National University of Science and Technology) ;
  • Lyu, Min-Young (Department of Mechanical System Design Engineering, Seoul National University of Science and Technology)
  • 박재웅 (서울과학기술대학교 기계시스템디자인공학과) ;
  • 안지혜 (서울과학기술대학교 기계시스템디자인공학과) ;
  • 박용민 (서울과학기술대학교 기계시스템디자인공학과) ;
  • 류민영 (서울과학기술대학교 기계시스템디자인공학과)
  • Received : 2012.10.15
  • Accepted : 2012.11.27
  • Published : 2012.12.31
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Abstract

There exist many merits in designing products and setting operational condition when computer aided engineering (CAE) is adopted in injection molding process. CAE also gives increasing efficient of molding, reducing developing time of product, and maintaining high quality products. Specially, it suggests design guidelines for new products and reducing wasting time to get steady state. Two and three dimensional computer simulations are available in injection molding and those results are somewhat different. However there are no guidelines for 2D and 3D computer simulations in using CAE in injection molding even though it is widely used in plastic industry. In this study, two and three dimensional computation results were compared for various part thickness, part shape, and number of finite element. Subsequently computational results were compared with experimental data such as pressure and temperature. The guidelines in two and three dimensional CAE analysis have been suggested through this study.

사출성형에 CAE (Computer Aided Engineering)을 적용함으로써 사출 성형품 설계와 공정조절에 큰 도움이 된다. 또한 성형의 효율성을 최대화하고 개발기간의 단축, 그리고 고품질 제품을 확보하는데 도움이 크다. 특히 신제품 개발에 대한 설계방안을 제시하고 실패율을 감소시킬 수 있다. 현재 사출성형의 CAE는 2D는 물론 3D도 해석이 가능한데 이 두 가지 방식은 약간의 차이를 가짐에도 불구하고 해석 상 차이에 관한 비교 및 일반적인 가이드라인이 정해져 있지 않다. 본 연구에서는 제품의 두께, 형상 그리고 유한요소 수에 따른 2차원 해석과 3차원 해석을 비교하였다. 그리고 실험을 통해 얻은 캐비티 내의 압력과 온도를 해석결과와 비교하였다. 본 연구를 통하여 사출성형의 2D해석과 3D해석에 대한 가이드라인을 제시하고자 하였다.

Keywords

References

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