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마그네슘 합금 구성식을 이용한 스프링백 예측
Prediction of Springback by Using Constitutive Equations of Mg Alloy Sheets
- 이명규;
- 정관수;
- 김성준;
- 김헌영
초록
Unique constitutive behavior of magnesium alloys as one of hexagonal close packed(hcp) metals has been implemented into the commercial finite element program ABAQUS. The constitutive equations can represent asymmetry in tension-compression yield stresses and flow curves. For the verification purpose, the springback of AZ31B magnesium alloy sheet was measured using the unconstrained cylindrical bending test proposed in Numisheet2002 benchmark committee. Besides the developed constitutive models, the isotropic modelsconsidered for comparison purpose. The predicted results by the finite element analysis and corresponding experiments showed enhanced prediction capability in springback analysis.
키워드
Magnesium Alloy Sheet; Asymmetry; Constitutive Equations; Springback; Unconstrained Cylindrical Bending Test; Magnesium Alloy Sheet; Asymmetry; Constitutive Equations; Springback; Unconstrained Cylindrical Bending Test
- 제목
- 마그네슘 합금 구성식을 이용한 스프링백 예측
- 제목 (타언어)
- Prediction of Springback by Using Constitutive Equations of Mg Alloy Sheets
- 저자
- 이명규; 정관수; 김성준; 김헌영
- 발행일
- 2008-04
- 유형
- Y
- 저널명
- 소성가공
- 권
- 17
- 호
- 2
- 페이지
- 97 ~ 101