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A stress-based shear fracture criterion considering the effect of stress triaxiality and Lode parameter

International Journal of Solids and Structures(2022)

引用 10|浏览5
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摘要
•A stress-based shear ductile fracture criterion is proposed to improve the prediction accuracy of failure for lightweight metals.•The mechanical behavior of AA5182-O sheet is uncovered from tension to equibiaxial tension.•The direct and inverse engineering methods are adopted to calibrate the fracture parameters.•The stress state-related fracture behavior of AA5182-O is numerically simulated.•The fracture limits of AA2024-T351 alloy from compression to tension is described by the sDF2016 criterion.
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关键词
Ductile fracture,Forming limit stress curve,Stress triaxiality,Lode parameter,Metal forming,Inverse engineering
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