Characterization Of Dynamic Deformation Behavior Of Al 7075-T6 At High Temperature By Using Shpb Technique

TRANSACTIONS OF THE KOREAN SOCIETY OF MECHANICAL ENGINEERS A(2010)

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摘要
The split Hopkinson pressure bar (SHPB) technique is extensively used to characterize material deformation behavior under high strain rate condition. In this study, the dynamic deformation behavior of aluminum 7075-T6 under a high strain rate and at a high temperature is investigated by using a modified SHPB set-up with the pulse shaper technique. The parameters used in the Johnson-Cook constitutive equation are determined by using the SHPB experimental results including the data on the effects of strain rate, temperature, strain hardening, and thermal softening of the material.
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关键词
Split Hopkinson Pressure Bar(SHPB), High Strain Rate, Dynamic Deformation Behavior, High Temperature, Al 7075-T6
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