• 제목/요약/키워드: 신장/블로 성형

검색결과 2건 처리시간 0.017초

균일한 두께분포를 위한 신장/블로 공정을 이용한 초소성 성형 공정설계 해석 (Analysis of Superplastic Forming Process Design Using a Combined Stretch/Blow Process for Uniform Thickness Distribution)

  • Hong, S.S.;Lee, J.S.;Kin, Y.H.
    • 한국정밀공학회지
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    • 제11권1호
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    • pp.129-137
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    • 1994
  • A rigid-viscoplastic finite element method has been used for modeling superplastic stretch/blow process design to improve thickness distribution. Punch velocity-time relationship of the stretch forming and pressure-time cycle of the blow forming for a given strain rate are calculated. A superplastic material is assumed to be isotropic and a plane-strain line element based on membrane approximation is employed for the formulation. The effects of the width, corner radius and height of the punch during stretch forming are examined for the final thickness distribution, and the process design to improve thickness distribution can be established.

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초소성 성형공정 최적화 (Optimization of Superplastic Forming Process)

  • 이정민;홍성석;김용환
    • 소성∙가공
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    • 제7권3호
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    • pp.207-214
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    • 1998
  • Influence of final thickness distribution in superplastic forming processes on mechanical properties of the product becomes very crucial. We should improve the thickness distribution of products by combining process parameters adequately In this paper we adopt a non-linear optimization technique for optimal process design of superplastic forming. And optimum design variable which makes the most adequate thickness distribution in combined stretc/blow forming and blow forming is predicted by this optimization scheme and rigid-viscoplastic finite element method.

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