Analysis of Propagating Crack In Isotropic Material under Dynamic Mode I Constant Displacement

- Journal title : Transactions of the Korean Society of Mechanical Engineers A
- Volume 24, Issue 8, 2000, pp.2007-2014
- Publisher : The Korean Society of Mechanical Engineers
- DOI : 10.22634/KSME-A.2000.24.8.2007

Title & Authors

Analysis of Propagating Crack In Isotropic Material under Dynamic Mode I Constant Displacement

Lee, Gwang-Ho;

Lee, Gwang-Ho;

Abstract

It has been reported that the dynamic stress intensity factor for a propagating crack is increasing or decreasing according to the increasement of the crack propagating velocity. It is confirmed in this study that the increasement or decreasement of stress intensity factor with crack growing velocity is accused by loading condition. When the crack propagates under a constant displacement along upper and lower boundary in finite plate, the dynamic stress intensity factor decreases according to the increasement of the propagating crack velocity. When the crack propagates under a constant stress along upper and lower boundary in finite plate, the dynamic stress intensity factor increases according to the increasement of the propagating crack velocity. The increasement or decreasement of stress intensity factor with crack growing velocity is greater in a fast crack propagation velocity than in a slow one.

Keywords

Dynamic Stress Intensity Factor;Propagating Crack;Dynamic Mode I Constant Displacement;

Language

Korean

References

1.

Kobayashi, A. S. and Mall, S., 1978, 'Dynamic Fracture Toughness of Homalite-100,' Exp. Mech., Jan., pp. 11-18

2.

Sih, G. C. and Chen, E. P., 1981, Mechanics of Fracture 6(Crack in Composite Materials), Martinus Nijhoff Pub.

3.

Fyjino, K. and Sekime, H. and Abe, H., 1984, 'Analysis of Edge Crack in Semiinfinite Composite with a Long Reinforced Phase,' Int. J. of Fract., Vol. 25, pp. 81-94

4.

Yuuki, R. and Cho, S. B., 1989, 'Efficient Boundary Element Analysis of Stress Intensity Factors for Interface Crack in Dissimilar Materials,' Engng. Fract. Mech., Vol. 34, pp. 179-188

5.

Chiang, C. R., 1990, 'Determination of the Dynamic Stress Intensity Factors of Moving Crack by Numerical Method,' Inter. J. of Fract., 45, pp. 123-130

6.

Yoffe, E. H., 1951, 'The Moving Griffith Crack,' Phil. Mag. 42, pp. 739-750

7.

Craggs, J. W., 1960, 'On the Propagation of a Crack in a Elastic Brittle Materials,' J. Mech. Phys. Solids 8, p. 66 doi:

8.

Broberg, K. B., 1960, 'The Propagation of Britle Crack,' Arkiv. Fysik, 18, No.10, pp. 159-192

9.

Baker, B. R., 1962, 'Dynamic Stress Created by a Moving Crack,' ASME J. of Appl. Mech., Vol. 29, pp. 449-545

10.

이광호, 황재석, 최선호, 1995, '직교이방성 유한 사각판에 내재된 외부균열의 등속전파 응력확대계수 $K_III$ ,' 대한기계학회논문집 제19권, 제11호, pp. 2843-2852

11.

최상인, 이광호, 1998, '등각사각판에서 전파하는 균열의 동적응력확대계수 및 광탄성무늬 형태,' 상주대학교 산업과학기술연구소 논문집, 제5편, pp. 119-131

12.

이광호, 최영철, 1999, '직교이방성 사각판에서 전파하는 수평균열해석,' 대한기계학회논문집 A권, 제23호, 제1호, pp. 89-98