서지주요정보
축대칭 및 평면 변형 단조의 열-점소성 유한 요소 해석 = Thermo-viscoplastic finite element analysis of axisymmetric and plane strain forging
서명 / 저자 축대칭 및 평면 변형 단조의 열-점소성 유한 요소 해석 = Thermo-viscoplastic finite element analysis of axisymmetric and plane strain forging / 천명식.
저자명 천명식 ; Cheon, Myeong-Sig
발행사항 [서울 : 한국과학기술원, 1988].
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소장정보

등록번호

4105145

소장위치/청구기호

학술문화관(문화관) 보존서고

MPE 8821

SMS전송

도서상태

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초록정보

Thermo-viscoplastic and viscoplastic finite element analysis are made for the study of deformation and temperature distribution in axisymmetric and plane strain forging. A rigid viscoplastic material model is used so as to take the strain rate effect into account. Computer programs are developed for axisymmetric and plane strain forging. As examples of viscoplastic analysis of hot forging processes, combined backward extrusion with rounded punches of various radii and free forging of round bars with flat and inclined platens are analyzed. Stress and strain distributions are computed for these examples. For combined backward extrusion, the effect of punch geometry on the inward flow is discussed from the comparison between the computation and the experiment carried out for pure Aluminum specimens. The computed results are in good agreement with the experimental observations. The optimal die geometry is recommended based on the computed and experimental results. A coupled analysis of viscoplastic deformation and heat transfer is made for upsetting of a simple cylinder both for isothermal and nonisothermal conditions. The distribution of temperature and strains is found and the temperature effect due to the variation of die velocity is discussed.

서지기타정보

서지기타정보
청구기호 {MPE 8821
형태사항 [vi], 91 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Myeong-Sig Cheon
지도교수의 한글표기 : 양동열
지도교수의 영문표기 : Dong-Yol Yang
학위논문 학위논문(석사) - 한국과학기술원 : 생산공학과,
서지주기 참고문헌 : p. 35-38
주제 Finite element method.
Dies (Metal-working)
Viscoplasticity.
Metals --Hot working.
온간 단조. --과학기술용어시소러스
점소성. --과학기술용어시소러스
유한 요소법. --과학기술용어시소러스
평면 변형. --과학기술용어시소러스
Forging.
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