서지주요정보
정수압 압출공정에서 윤활막의 온도효과를 고려한 압출 하중의 해석 = An analysis of extrusion load considering thermal effect on hydrodynamic lubrication film in hydrostatic extrusion process
서명 / 저자 정수압 압출공정에서 윤활막의 온도효과를 고려한 압출 하중의 해석 = An analysis of extrusion load considering thermal effect on hydrodynamic lubrication film in hydrostatic extrusion process / 박훈재.
저자명 박훈재 ; Park, Hoon-Jae
발행사항 [서울 : 한국과학기술원, 1987].
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소장정보

등록번호

4104387

소장위치/청구기호

학술문화관(문화관) 보존서고

MPE 8707

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초록정보

The present study is concerned with an analysis of hydrostatic extrusion through conical dies. For the analysis of hydrostatic extrusion the upper-bound theory for metal is used in combination with a hydrodynamic lubrication theory for lubrication film. A kinematically admissible velocity field in spherical coordinate is proposed in order to predict metal deformation energy rate which relates to some variables such as reduction of area, die cone angle and film thickness. For the analysis of the phenomenon of viscous fluid a lubrication equation is formulated from Reynolds equation in consideration of thermal effect on the fluid film. According to the concept of energy minimization the total energy rate composed of metal deformation energy rate and fluid viscous shear energy dissipation rate is minimized with respect to the chosen parameters. Strain-hardening effect and variation of viscosity due to pressure and temperature change are taken into account. Experiments are carried out with aluminum and copper at room temperature. The experimental results are good agreement with the theoretical predictions.

서지기타정보

서지기타정보
청구기호 {MPE 8707
형태사항 iv, 59 p. : 삽도 ; 26 cm
언어 한국어
일반주기 부록 수록
저자명의 영문표기 : Hoon-Jae Park
지도교수의 한글표기 : 조남선
지도교수의 영문표기 : Nam-Seon Cho
학위논문 학위논문(석사) - 한국과학기술원 : 생산공학과,
서지주기 참고문헌 : p. 56-59
주제 Lubrication and lubricants.
Viscous flow.
Strain hardening.
윤활막. --과학기술용어시소러스
압출. --과학기술용어시소러스
수압 성형. --과학기술용어시소러스
점성류. --과학기술용어시소러스
변형 경화. --과학기술용어시소러스
Metals --Extrusion.
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