Anti-Plane Fracture Analysis of a Functionally Gradient Material Infinite Strip With Finite Width

LI Yong-dong; JIA Bin; ZHANG Nan; DAI Yao; TANG Li-qiang

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Article Navigation > Applied Mathematics and Mechanics > 2006 > 27(6): 683-689

LI Yong-dong, JIA Bin, ZHANG Nan, DAI Yao, TANG Li-qiang. Anti-Plane Fracture Analysis of a Functionally Gradient Material Infinite Strip With Finite Width[J]. Applied Mathematics and Mechanics, 2006, 27(6): 683-689.

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Anti-Plane Fracture Analysis of a Functionally Gradient Material Infinite Strip With Finite Width

1.
Division of Engineering Mechanics, Department of Mechanical Engineering, Academy of Armored Force Engineering, Beijing 100072, P. R. China;

Received Date: 2005-04-08
Rev Recd Date: 2006-02-12
Publish Date: 2006-06-15

Abstract

Abstract

The special case of a crack under mode conditions was treated,lying parallel to the edges of an infinite strip with finite width and with the shear modulus varying exponentially perpendicular to the edges.By using Fourier transforms the problem was formulate dinterms of a singular integral equation.It was numerically solved by representing the unknown dislocation density by a truncated series of Chebyshev polynomials leading to a linear system of equations.The stress intensity factor (SIF)results were discussed with respect to the influences of different geometric parameter sand the strength of the non-homogeneity.It was indicated that the SIF increases with the increase of the crack length and decreases with the increase of the rigidity of the material in the vicinity of crack.The SIF of narrow strip is very sensitive to the change of the non-homog eneity parameter and its variation is complicated.With the increase of the non-homogeneity parameter,the stress intensity factor may increase,decrease or keep constant,which is mainly determined by the strip width and the relative crack location.If the crack is located at the midline of the strip or if the strip is wide,the stress intensity factor is not sensitive to the material non-homogeneity parameter.
- functionally gradient material,
- anti-plane fracture,
- stress intensity factor,
- Fourier transform,
- singular integral equation,
- finite-width strip

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References(12)

References

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