Jin Ting, Yang Ping. Shear behaviors of hat-shaped high manganese steel specimens under high-speed impact[J]. Explosion And Shock Waves, 2017, 37(1): 150-156. doi: 10.11883/1001-1455(2017)01-0150-07
Citation:
Jin Ting, Yang Ping. Shear behaviors of hat-shaped high manganese steel specimens under high-speed impact[J]. Explosion And Shock Waves, 2017, 37(1): 150-156. doi: 10.11883/1001-1455(2017)01-0150-07
Jin Ting, Yang Ping. Shear behaviors of hat-shaped high manganese steel specimens under high-speed impact[J]. Explosion And Shock Waves, 2017, 37(1): 150-156. doi: 10.11883/1001-1455(2017)01-0150-07
Citation:
Jin Ting, Yang Ping. Shear behaviors of hat-shaped high manganese steel specimens under high-speed impact[J]. Explosion And Shock Waves, 2017, 37(1): 150-156. doi: 10.11883/1001-1455(2017)01-0150-07
Adiabatic shear band (ASB) is a typical failure mode of material during high speed deformation. In order to better understand its formation and expansion process, two-dimensional numerical simulation with the Johnson-Cook constitutive model was conducted to reveal shear behaviors of hat-shaped high manganese steel specimens under high-speed impact using the ANSYS/LS-DYNA software. The results show that across the shear band, the strain distributions are the highest in the shear zone center, and are then gradually reduced to the sides, which is similar to a Gaussian distribution, and in the direction parallel to the shear zone, its distributions are characterized by that they are high at both ends and low in the middle. The formation and propagation direction of ASB are determined according to the simulated strain distributions. It is observed that ASBs are formed from both ends of the shear zone and extend to the middle of the samples. Finally, the temperature distributions inside and outside the ASB interior and exterior are obtained directly by editing the k file of the software and they are similar to those of the strain. Simulation and experimental results are shown in good agreement.
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