Residual Stresses and Stress Intensity Factor
Calculations in T-Welded Joints AM Al-Mukhtar Abstract In welded joint, the residual stresses effect can be considered using the residual stress
intensity factor (K res). In this study, K res is calculated using the analytic weight
function method (WFM) and the polynomial distribution of residual stresses (σ res). The
different residual stress distributions have been used analytically. It is to be emphasized
that the current approach is little investigated. This is because the weight function has
already been developed to calculate K for a crack that had already existed, and hence to
calculate the stress distribution and stress intensity factor over the crack face. Therefore,
the current approach calculates K res with σ res consideration for the crack which initiates
and propagates until failure. The validity to use the proposed weight function has been
shown. The results of K res have been compared with those obtained from FEM. Journal of failure analysis and prevention |
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