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

The Korean Society of Mechanical Engineers (대한기계학회)
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A Study on Forming of Silencer Case Using Virtual Tryout Method

가상 트라이아웃을 이용한 소음기 케이스 성형에 관한 연구

  • Ko, Dae-Lim (School of Mechanical and Automotive Engineering, Univ. of Ulsan) ;
  • Lee, Kyung-Sick (School of Mechanical and Automotive Engineering, Univ. of Ulsan)
  • 고대림 (울산대학교 기계자동차공학부) ;
  • 이경식 (울산대학교 기계자동차공학부)
  • Received : 2009.12.31
  • Accepted : 2010.07.08
  • Published : 2010.09.01
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Abstract

Forming of a silencer case was studied using a virtual tryout method. First, the appropriate blank shape was determined by cutting off the undeformed part of the rectangular blank. Then drawbeads were designed such that the formation of wrinkles on the shoulders and pipe connection can be prevented. Finally, the shape bead was designed such that fracture and formation of wrinkles around the pipe connection can be avoided. The prototype of the silencer case was manufactured in accordance with the conditions of the virtual tryout process. By comparing the formability of the prototype with the results of finite element analysis, it was found that the forming of the prototype agreed well with the results of analysis.

본 논문에서는 가상 트라이아웃 방식을 이용하여 소음기 케이스의 성형에 관한 연구를 수행하였다. 먼저 사각 블랭크로부터 성형 중 변형이 일어나지 않는 부분을 코너컷하여 적정 블랭크를 설계하였고 파이프 삽입부와 어깨 반경부에 발생하는 주름을 방지하기 위해 적정 드로비드를 설계하였다. 마지막으로 파이프 삽입부 주위에 발생하는 주름과 파단을 방지하기 위해 형상비드를 설계하였다. 가상트라이 아웃방식으로 결정된 성형조건에 따라 소음기 케이스의 시제품을 제작하고 해석결과와 비교한 결과 시제품의 성형성, 두께 분포 등이 해석 결과와 잘 일치함을 알 수 있었다.

Keywords

References

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