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Content available Research on parameters of MMC fracture criterion for advanced high strength dual-phase steel sheets
Fu Qiutao, Li Di, Song Hui, Liu Xingfeng, Lu Zipeng, Cui Hongjian
Journal of Theoretical and Applied Mechanics
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2022
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Vol. 60 nr 2
253--265
EN
To predict the shear fracture, tests of advanced high-strength DP steels have been carried out, and fracture models of DP steels have been established using the MMC fracture model. The MMC fracture parameters were obtained through multiple sets of experiments and stress triaxiality solved by simulation. The result was verified by stretch-bending, Nakazima tests and simulations. It shows that the MMC criterion is suitable for predicting ductile fracture of DP980, 1180. The correlation between the parameters of the MMC criterion and DP steel material properties can reduce the amount of tests data required.
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