• 제목/요약/키워드: 성형 공정

검색결과 1,816건 처리시간 0.028초

AutoLISP을 이용한 롤 성형 공정의 플라워 설계 (Flower Design of Roll Forming Process Using AutoLISP)

  • 김광희;정동원
    • 동력기계공학회지
    • /
    • 제1권1호
    • /
    • pp.154-161
    • /
    • 1997

  • Because of the complexity of the flower design of roll forming process, in which the flat strip is progressively deformed by successive sets of profiled rolls, a computer-aided design system for the flower design has been developed. It is programmed in AutoLISP and DCL(Dialogue Control Language) of AutoCAD. It has been found that the system is helpful in saving the time and effort required to design the flower of the product to be roll-formed.

  • PDF

알루미나 분말 성형체의 고온 치밀화 성형 공정 해석을 위한 모델 (Model for High Temperature Densification)

  • 권영삼;김기태
    • 한국소성가공학회:학술대회논문집
    • /
    • 한국소성가공학회 1994년도 춘계학술대회 논문집
    • /
    • pp.159-166
    • /
    • 1994

  • A constitutive model was proposed to analyze creep densification and grain growth of alumina powder compacts during high temperature processing. Theoretical results from the constitutive model were compared with various experimental data of alumina powder compacts in the literature including pressureless sintering, sinter forging and hot pressing. The proposed constitutive equations were implemented into finite element analysis program (ABAQUS) to simulate densification for more complicated geometry and loading conditions. High temperature forming processing of alumina compact with complicated shape was simulated. Processing of Alumina Powder Compacts

  • PDF

초소성 성형/확산접합 공정의 유한요소 해석 (Finite Element Analysis of Superplastic Forming/Diffusion Bonding Processes)

  • 홍성석;김용환
    • 소성∙가공
    • /
    • 제5권1호
    • /
    • pp.37-46
    • /
    • 1996

  • Superplastic forming/diffusion bonding (SPF/DB) processes were analyzed using a rigid visco-plastic finite element method. The optimum pressure-time relationship for a target strain rate and thickness distributions were predicted by two-node line elements based on the membrane approximation for plane strain. Material behavior during SPF/DB of the integral structures having complicated shapes was investigated. The tying condition is employed for the analysis of inter-sheet contact problems. A movement of rib structure is successfully predicted during the forming.

  • PDF