지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
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In spite of progress in predicting ductile failure, the development of a macroscopic yield criterion to describe damage evolution in HCP (hexagonal close-packed) materials remains a challenge. HCP materials display strength differential effects (i.e., different behavior in tension versus compression) in their plastic response due to twinning. Cazacu and Stewart(2009) developed an analytical yield criterion for porous material containing randomly distributed spherical voids in an isotropic, incompressible matrix that shows tension-compression asymmetry. The goal of the calculations in this paper is to investigate the effect of the tension-compression asymmetry on necking induced by void nucleation, evolution and consolidation. In order to investigate the effect of the tension-compression asymmetry of the matrix on necking and fracture initiation, three isotropic materials A, B, and C were examined with different ratios of tension-compression asymmetry. The various types of material had BCC, FCC, and HCP crystal structures, respectively. The ratio between tension and compression in plastic flow significantly influences the fracture shape produced by damage propagation as well as affecting the localized neck.
목차
Abstract
1. 서론
2. 공극성장 항복함수(Cazacu and Stewart criterion)
3. 공극성장 모델을 이용한 인장시험 해석
4. 결론
참고문헌
참고문헌 (10)
참고문헌 신청
1. [학술지(정기간행물)] - O. Cazacu / 2009 / Analytic Plastic Potential for Porous Aggregates with Matrix Exhibiting Tension-compression Asymmetry / J. Mech. Phys. Solids 57 (2) : 325 ~ 341
2. [학술지(정기간행물)] - O. Cazacu / 2006 / Orthotropic Yield Criterion for Hexagonal Closed Packed Metals / Int. J. Plast. 22 (7) : 1171 ~ 1194
3. [학술지(정기간행물)] - R. Hill / 1967 / The Essential Structure of Constitutive Laws for Metal Composites and Polycrystals / J. Mech. Phys. Solids 15 (2) : 79 ~ 95
4. [단행본] - J. Mandel / 1972 / Plasticite Classique et Viscoplasticite, CISM Courses and Lectures, Vol. 97, In International Center for Mechanical Sciences / Springer-Verlag
5. [학술지(정기간행물)] - A. L. Gurson / 1977 / Continuum Theory of Ductile Rupture by Void Nucleation and Growth – Part I. Yield Criteria and Flow Rules for Porous Ductile Media / J. Engrg. Mat. Tech 99 : 2 ~ 15
2. [학술지(정기간행물)] - O. Cazacu / 2006 / Orthotropic Yield Criterion for Hexagonal Closed Packed Metals / Int. J. Plast. 22 (7) : 1171 ~ 1194
3. [학술지(정기간행물)] - R. Hill / 1967 / The Essential Structure of Constitutive Laws for Metal Composites and Polycrystals / J. Mech. Phys. Solids 15 (2) : 79 ~ 95
4. [단행본] - J. Mandel / 1972 / Plasticite Classique et Viscoplasticite, CISM Courses and Lectures, Vol. 97, In International Center for Mechanical Sciences / Springer-Verlag
5. [학술지(정기간행물)] - A. L. Gurson / 1977 / Continuum Theory of Ductile Rupture by Void Nucleation and Growth – Part I. Yield Criteria and Flow Rules for Porous Ductile Media / J. Engrg. Mat. Tech 99 : 2 ~ 15
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UCI(KEPA) : I410-ECN-0101-2014-551-000257653