서지주요정보
에너지법에 의한 박판 성형공정의 해석에 관한 연구 = Study on the analysis of sheet metal forming processes by the energy method
서명 / 저자 에너지법에 의한 박판 성형공정의 해석에 관한 연구 = Study on the analysis of sheet metal forming processes by the energy method / 이항수.
발행사항 [대전 : 한국과학기술원, 1991].
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소장정보

등록번호

8002309

소장위치/청구기호

학술문화관(문화관) 보존서고

DPE 9113

휴대폰 전송

도서상태

이용가능

대출가능

반납예정일

리뷰정보

초록정보

A systematic approach of the energy method is proposed for analysis of axisymmetric and three-dimensional sheet metal forming. In the proposed formulation, the total deforming region is divided into several regions by the geometric characteristics and the contact boundary condition. The velocity field is assumed in each region and is constructed over the global deforming region satisfying the conditions of the kinematically admissible velocity field. Then, the solution is obtained by optimizing the total energy with respect to some given parameters assumed in the velocity field and the geometric profile. For axisymmetric sheet metal forming, the total deforming region consists of several sections of four types defined by simple geometry. In order to verify the effectiveness of the proposed method, hemispherical punch streching is analyzed considering the frictional effect at the contact region as well as axisymmetric cup drawing by considering the bending effect. The validity of the present method is confirmed by comparing the computed results with the reported finite element solutions as well as with the corresponding experimental results. For analysis of three dimensional sheet metal forming, a formulation is introduced in which a continuous velocity field is appropriately constructed and the hydrostatic bulging with elliptic diaphragm is analyzed as a simple example for three-dimensional sheet metal forming. The computed results are compared with the existing experimental results and both results are shown to be in good agreement. In order to analyze general sheet metal forming by the proposed energy method, an approach is proposed in which the geometric shapes of subregions are constructed by sweeping the section curves defined at the boundaries of each region and the velocity field is constructed by sweeping the velocity boundary functions at each region. Hydrostatic bulging with a rectangular diaphragm and deep drawing by elliptic and clover type punches are analyzed. The computed results are then compared with the corresponding experiments or the finite element solutions and it is found that the theoretical predictions are in excellent agreements with them. It is, therefore, shown that the present approach of the energy method is effective in analyzing axisymmetric and three-dimensional sheet metal forming and is further applicable to more complicated industrial problems.

서지기타정보

서지기타정보
청구기호 {DPE 9113
형태사항 v, 182 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Hang-Soo Lee
지도교수의 한글표기 : 양동열
지도교수의 영문표기 : Dong-Yol Yang
학위논문 학위논문(박사) - 한국과학기술원 : 생산공학과,
서지주기 참고문헌 : p. 90-95
주제 Deep drawing (Metal-work)
Plastic ayalysis (Engineering)
Bulhing (Metalwork)
박판. --과학기술용어시소러스
단조. --과학기술용어시소러스
소성 역학. --과학기술용어시소러스
에너지법. --과학기술용어시소러스
Sheet metal work.
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