CO2 배출량을 감안한 중국 5대 화력발전사의 생산성 변화분석

학위논문 (석사)-- 서울대학교 대학원 : 농경제사회학부, 2011.2. 권오상.Maste

Design of Porcess Parameters in Axisymmetric Multi-step Deep Drawing by a Finite Element Inverse Method

A finite element inverse method is introduced for direct prediction of blank shapes, strain distributions, and reliable intermediate shapes from desired final shapes in axisymmetric multi-step deep drawing processes. This mothod enables the determination of process disign. The approach deals with the Henckys deformation theory. Hills second order yield criterion, simplified boundary conditions, and minimization of plastic work with constraints. The algorithm developed is applied to motor case forming, and cylindrical cup drawing with the large limit drawing ratio so that it confirms its validity by demonstrating resonably accurate numerical results of each problem. Numerical examples reveal the reason of difficulties in motor case forming with corresponding limit diagrams

Design of process parameters in axisymmetric multi-step deep drawing by a finite element inverse method

학위논문(석사) - 한국과학기술원 : 기계공학과, 1997.2, [ v, 73 p. ]한국과학기술원 : 기계공학과