Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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Residual Stress Estimation and Deformation Analysis for Injection Molded Plastic Parts using Three-Dimensional Solid Elements

3 차원 입체요소를 사용한 사출성형품의 잔류응력 예측 및 후변형 해석

  • 박근 (서울산업대학교 기계설계.자동화공학부) ;
  • 안종호 (삼성전기(주) 중앙연구소 금형팀) ;
  • 임충혁 (서울산업대학교 기계설계.자동화공학부)
  • Published : 2003.04.01
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Abstract

Most of CAE analyses for injection molding have been based on the Mele Shaw's approximation: two-dimensional flow analysis. in some cases, that approximation causes significant errors due to loss of the geometrical information as well as simplification of the flow characteristics in the thickness direction. Although injection molding analysis software using three-dimensional solid elements has been developed recently, such as Moldflow Flow3D, it does not contain a deformation analysis function yet. The present work covers three-dimensional deformation analysis or injection molded plastic parts using solid elements. A numerical scheme for deformation analysis has bun proposed from the results of injection molding analysis using Moldflow Flow3D. The accuracy of the proposed approach has been verified through a numerical analysis of rectangular plates with various thicknesses in comparison with the classical shell-based approach. In addition, the reliability of the approach has also been proved through an industrial example. an optical plastic lens, in comparison of real experiments.

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References

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