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Stress intensity factor in residual stress field

Stress intensity factor in residual stress field

Stress intensity factor in residual stress field

(OP)
Hi everyone
I'm trying to calculate stress intensity factor for a crack that grow in a residual stress field. I think that abaqus crack contour integral should be used. The residual stress field is caused due to a plastic tensile load that exerted before crack appearance. I don't know how to create this residual stress before crack (seam)? If someone knows how can I do it, it would be of great help.

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