Disappearance Conditions of Stress Singularity Based on Stress Intensity in Dissimilar Materials. 1st Report. Influence of Poisson's Ratio.

忠信, 井上

doi:10.1299/kikaia.62.2726

Trans.JSME, Ser.A

1996

DOI: 10.1299/kikaia.62.2726

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Disappearance Conditions of Stress Singularity Based on Stress Intensity in Dissimilar Materials. 1st Report. Influence of Poisson's Ratio.

井上忠信¹

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2004

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Relation between Stress Intensity Factor of a Small Edge Interface Crack and Intensity of Free-Edge Stress Singularity of Bonded Dissimilar Materials

Ioka

Kubo

2004

KEM

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When two materials are bonded, the free-edge stress singularity usually develops near the intersection of the interface and the free-surface. Fracture in bonded dissimilar materials may therefore occur from an interface crack which develops at the intersection of interface and free-surface. Free-edge stress singularity is very important in the evaluation of strength of bonded dissimilar materials. In this study, the relationship between the stress intensity factor of a small edge crack on interface of bonded dissimilar materials and the intensity of free-edge stress singularity of bonded dissimilar materials with no crack under external mechanical loading was investigated numerically by using the boundary element method. The relationship was also investigated theoretically by using the principle of superposition. The results of numerical analyses were compared with those of theoretical analyses. It was found that stress intensity factors of small edge crack on interface K1 and K2 were proportional to the intensity of free-edge stress singularity of bonded dissimilar materials Kσ without crack irrespective of the combination of materials. The numerically determined proportional coefficient between K1 and Kσ agreed well with the theoretical one, and was not affected by crack length when proper normalizations were applied. From these results, it is suggested that stress intensity factor of small edge crack on interface can be used as a strength criterion of interface of bonded dissimilar materials.

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Relation between Stress Intensity Factor of a Small Edge Interface Crack and Intensity of Free-Edge Stress Singularity of Bonded Dissimilar Materials

Ioka

Kubo

2004

KEM

View full text Add to dashboard Cite

show abstract

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Disappearance Conditions of Stress Singularity Based on Stress Intensity in Dissimilar Materials. 1st Report. Influence of Poisson's Ratio.

Cited by 1 publication

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Relation between Stress Intensity Factor of a Small Edge Interface Crack and Intensity of Free-Edge Stress Singularity of Bonded Dissimilar Materials

Relation between Stress Intensity Factor of a Small Edge Interface Crack and Intensity of Free-Edge Stress Singularity of Bonded Dissimilar Materials

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