한국정밀공학회지 (Journal of the Korean Society for Precision Engineering)

  • 제21권12호
  • /
  • Pages.133-139
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  • 2004
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  • 1225-9071(pISSN)
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  • 2287-8769(eISSN)
한국정밀공학회 (Korean Society for Precision Engineering)
권호 표지

축대칭 압출 공정에서 상계법을 이용한 금형 접족면압의 계산

Calculation of Contact Pressure to the Die of Axisymmetric Extrusion by Using Upper Bound Solution

  • 최영 (인제대학교 기계자동차공학부) ;
  • 여홍태 (동의대학교 기계공학과) ;
  • 허관도 (동의대학교 기계공학과)
  • 발행 : 2004.12.01
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초록

In general, the contact pressure to the die cannot be easily determined by using upper bound solution. Recently, the authors have proposed the method determining the contact pressure with the upper bound solution for the forming with the plane stain plastic deformation. In this paper, the method is applied to an axisymmetric forward extrusion process. The contact pressure to the die of the axisymmetric extrusion has been determined with the upper bound solution and compared with the result of rigid plastic FEM. The optimal semi-angles of die have been obtained minimizing the relative contact pressure to die fur the extrusion ratio.

키워드

참고문헌

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