Line-spring boundary element method for a surface cracked plate

The authors have developed a new line-spring boundary element method which couples the line-spring model with the boundary element method to deal with the problem of a surface cracked plate. However, the drawback of the line-spring model is that a reliable stress intensity factor could not be directly obtained near the free surface intersection. Therefore, the virtual crack extension technique is employed in a post-processor of the line-spring boundary element method to obtain the stress intensity factor at the crack front-free surface intersection. Theoretical analysis is described. Stress intensity factors for surface cracks are calculated to verify the proposed method. The interaction of two surface cracks is also investigated. The solutions obtained by the line-spring boundary element method show that the method proposed is efficient and reasonably accurate. Nomenclature a a ( x ) = A = C Ci, j = d = E = ERRT = F = FA, Fs, Fc, Ft, Fb = G = H = g~ = LSBEM = LSFEM = M n = M t M r =

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Analysis of surface cracks using the line-spring boundary element method and the virtual crack extension technique

Zeng

Dai

Yang

1993

Int J Fract

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Crack growth rate of an inclined surface crack

Zeng

Dai

1992

Engineering Fracture Mechanics

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Analysis of fracture mechanics parameters for a surface cracked plate using a nonlinear line-spring boundary element method

Zeng¹,

Dai²

1993

International Journal of Pressure Vessels and Piping

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Line-spring boundary element method for a surface cracked plate

Cited by 7 publications

References 14 publications

Analysis of surface cracks using the line-spring boundary element method and the virtual crack extension technique

Analysis of surface cracks using the line-spring boundary element method and the virtual crack extension technique

Crack growth rate of an inclined surface crack

Analysis of fracture mechanics parameters for a surface cracked plate using a nonlinear line-spring boundary element method

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