Journal of the Korean Society of Manufacturing Technology Engineers (한국생산제조학회지)

The Korean Society of Manufacturing Technology Engineers (한국생산제조학회)
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Structural Optimization of a Light-weight Manhole Cover Using FEM and Response Surface Method

유한요소법과 반응표면법을 이용한 경량 맨홀 커버 구조 최적화 설계

  • Lee, Hyoungwook (Department of Energy System Engineering, Korea National University of Transportation)
  • Received : 2016.09.13
  • Accepted : 2016.11.23
  • Published : 2016.12.15
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Abstract

The locking load of a conventional manhole depends on the weight of its cover. Locking-type manhole structures with a special locking mechanism were recently developed to prevent accidents such as stolen cover, away cover from a frame. The weight of the manhole structure can be reduced under structural safety because the locking force of a locking-type manhole is greater than the weight of the cover. A light-weight manhole cover is developed in this study by using a finite element stress analysis and the design of experiments. Static stress analysis and fracture experiments are also conducted to analyze the states of the initial product. The optimum light-weight manhole cover considering manufacturing molds is developed and tested. Consequently, the weight was found to reduce by 16%. In addition, the fracture load increased by 38%.

Keywords

References

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