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

The Korean Society of Mechanical Engineers (대한기계학회)
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Machining Analysis of the Autofrettaged Compound Cylinder

자긴가공된 복합실린더의 기계가공해석

  • 박재현 (충남대학교 대학원 기계설계공학과 BK21 메카트로닉스사업단) ;
  • 김재훈 (충남대학교 대학원 기계설계공학과 BK21 메카트로닉스사업단) ;
  • 차기업 (국방과학연구소) ;
  • 홍석균 (국방과학연구소) ;
  • 이영신 (충남대학교 기계설계공학과 BK21 메카트로닉스사업단)
  • Published : 2007.07.01
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Abstract

Autofrettage process is used for internal forming and sizing of cylinder designed to withstand high internal pressures. Once the tube is autofrettaged, it needs to be machined to its final dimensions both at the bore and its outer surface. This paper presents an analytical analysis and numerical analysis of machined compound cylinder using finite element code, ANSYS10.0. An analytical model for predicting the level of autofrettage following either inner, outer, or combined machining of the compound cylinder is developed for the autofrettage residual stress field is simulated by an autofrettaged pressure. The autofrettaged pressures are obtained by using trying-error method. As autofrettage percentage is 20 % and 40 %, the numerical results are found to be in almost agreement with the analytical ones. However, as autofrettage percentage is 60 %, the numerical results have a little difference with the analytical ones.

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References

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