한국금형공학회:학술대회논문집
- 한국금형공학회 2008년도 하계 학술대회
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- Pages.159-162
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- 2008
사출금형에서 내압에 의한 응력집중 및 크랙 분석
An Analysis of stress concentration and crack in injection mold by cavity pressure
- 발행 : 2008.06.24
초록
High pressure is involved during injection molding operation specially packing phase. Cracks in the mold are often occurred by high cavity pressure. In this study, structural analysis of mold has been performed using commercial softwares, Abaqus and Ansys, to investigate cause of crack in the injection mold. Structural analysis contains four cases: stress distribution according to the cavity pressure, stress concentration according to the boundary conditions, stress concentration for inter-locking design of mold, and stress concentration for distributed cavity pressure. Through this study it was observed that the locations of stress concentrations were coincident with locations of crack. Robust mold design is being required to withstand high cavity pressure.