서지주요정보
비원형 튜브 형재의 후방 압출에 대한 실험식 유도에 관한 연구 = Some practical load formulae for backward extrusion of non-circular tubes on the basis of experiments
서명 / 저자 비원형 튜브 형재의 후방 압출에 대한 실험식 유도에 관한 연구 = Some practical load formulae for backward extrusion of non-circular tubes on the basis of experiments / 우호길.
저자명 우호길 ; Woo, Ho-Kil
발행사항 [서울 : 한국과학기술원, 1980].
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소장정보

등록번호

4000996

소장위치/청구기호

학술문화관(문화관) 보존서고

MPE 8015

휴대폰 전송

도서상태

이용가능

대출가능

반납예정일

리뷰정보

초록정보

The objective of this study is to set up a more general and practical formulae for backward extrusion of shaped tubes. Instead of using conventional extrusion ratio, an "effective extrusion ratio" is defined in order to take into account the effect of non-circular shapes by taking extrusion ratio through infinitesimal meridional sector at any angular position and by summing up the values throughout the region. Thus an empirical formula is derived by using the effective extrusion ratio. Through various experiments, the constants for the empirical formula is determined. It is found out that the formula utilizing the effective extrusion ratio is widely applicable to various shapes including tubes with internal polygonal holes. In order to extend the applicability of the formula, e.g, to include the backward extrusion of tubes with similar internal and external contours, a new shape factor of "effective extrusion ratio" is defined in addition and is effectively applied to the backward extrusion of similar-shaped tubes. Variation of punch pressure with respect to the change in the length of land is also studied in order to establish the effective punch design in backward extrusion. Experiments are carried out for commercially pure aluminum billets. The use of the proposed empirical formulae for various shaped tubes proves the wide applicability of the formulae.

서지기타정보

서지기타정보
청구기호 {MPE 8015
형태사항 [iv], 50, [30] p. : 삽도, 설계도 ; 26 cm
언어 한국어
일반주기 부록 수록
저자명의 영문표기 : Ho-Kil Woo
지도교수의 한글표기 : 양동열
지도교수의 영문표기 : Dong-Yol Yang
학위논문 학위논문(석사) - 한국과학기술원 : 생산공학과,
서지주기 참고문헌 : p. 42-45
주제 Tubes.
Plastic analysis.
Empirical theology.
압출. --과학기술용어시소러스
신관 (금속) --과학기술용어시소러스
실험식. --과학기술용어시소러스
소성 역학. --과학기술용어시소러스
Metals --Extrusion.
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