J‐integral evaluation for V‐notched ductile plates subjected to tension
Material Design & Processing Communications(2019)
摘要
The present research is focused on checking that if the EMC-J criterion, which is a combination of Equivalent Material Concept (EMC) and the linear elastic J-integral expression for blunt V-notches, could be a suitable evaluation to estimate the critical load in ductile aluminum plates with V-shaped notches subjected to tension loading, experiencing significant yielding regimes. To proceed, Al 7075-T6 and Al 6061-T6 rectangular thin plates with V-shaped notches are considered based on the recent researches. Due to ductile behavior of the two aluminum alloys, utilization of EMC is necessary to get rid of elastic-plastic calculations for theoretical estimations, which normally consume so much time and come with complexities. It is worth noting that this research is the first of its kind to estimate the failure load of the ductile specimens with V-shaped notches subjected to tension by combining the EMC and linear elastic J-integral for blunt V-shaped notches. Finally, the evaluations of EMC-J criterion for blunt V-notches revealed that it can predict the experimental results of failure load well.
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