Browse > Article

A Study of Localization for Adiabatic Shear Band in WHA(Tungsten Heavy Alloy)  

Hwang, Doo-Son (충남대 기계공학과 대학원)
Hong, Sung-In (충남대 기계공학과, 충남대학교 BK21 메카트로닉스사업단)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.11, no.6, 2007 , pp. 18-25 More about this Journal
Abstract
In a plastic metal forming of thermally rate-sensitive material, the localized shear band stems from evolution of a narrow region in which intensive plastic flow occurs. And it give rise to fatal fracture with plastic instability. The objectives of this study are to investigate the localization behavior by using numerical method and predict the failure for WHA(Tungsten Heavy Alloy). In this work, the implicit finite difference scheme is used because of the advantage about convergence and the numerical stability. This study is based on an analysed material with hardening as well as thermally softening behavior which includes isotropic strain hardening and observed the extension of localization within shear band according to material properties.
Keywords
WHA-tungsten heavy alloy; Adiabatic Shear Band; Localization; Implicit Finite Difference Method; Kinematic Hardening Relation;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 정동택, 유요한, "4340 강의 단열 전단 밴드 생성에 대한 유한요소 해석 및 실험적 고찰," 대한기계학회논문집, 18권 5호, 1994, pp.1134-1143
2 Paulun, J. E. and Pecherski, R., "On the Application of the Plastic Spin Concept for the Description of Anisotropic Hardening in Finite Deformation Plasticity," Int. J. Plast., Vol. 3, 1987, pp.303-314   DOI   ScienceOn
3 황두순, 이병섭, 윤수진, 홍성인, "단열전단밴드의 국부화 진행에 대한 수치해석적 연구," 한국소성가공학회 '99년도 춘계학술대회 논문집, 1999, pp.225-228
4 황두순, 노병래, 홍성인, "홉킨슨 압축봉 장치를 이용한 텅스텐 합금의 동적 재료 특성에 관한 연구," 한국정밀공학회논문집, 제22권, 제8호, 2005, pp.92-99   과학기술학회마을
5 홍대훈, 황두순, 이병섭, 홍성인, "티타늄 합금재의 튜브 스피닝 공정해석," 한국추진공학회지, 제4권, 제 3호, 2000, pp.55-63
6 Cherukuri, H. P. and Shawki, T. G., "An Energy Based Localization Theory : 1.Basic Framework, 2.Effects of the Diffusion, Inertia and Dissipation numbers," Int. J. Plasticity, 1995, pp.15-40, pp.41-64
7 이병섭, 황두순, 윤수진, 홍성인, "이동 경화를 고려한 좌굴 및 소성 불안정 유동에 관한 연구," 한국소성가공학회 '99년도 춘계학술대회 논문집, 1999, pp.98-101
8 Fressengeas, C., "Adiabatic Shear Morphology at Very High Strain Rates," Int. J. Impact Eng Vol.8. No.2, 1989, pp. 141-157   DOI   ScienceOn
9 Dafalis, Y. F., "Corotational Rates for Kinematic Hardening at Large Plastic Deformation," J. App. Mech., Vol. 50, 1983, pp.561-570   DOI
10 김완수, 이병섭, 황두순, 홍성인, "업셋 단조의 좌굴 및 소성 불안정 유동에 관한 연구," 한국소성가공학회지, 제 8권 제4호, 1999, pp.393-398
11 Pecherski, R.B., "The plastic spin concept and the theory of finite plastic deformation with induced anisotropy," Arch. Mech., Vol. 40, 1988, pp.807-815