A note on the applicability of a constitutive model with acoustoplasticity to high strain rate deformation induced by high frequency impacts

This paper investigates the applicability of a new constitutive model with acoustoplasticity (CMA) to characterise the material deformation at ultra-high strain rates. It shows that this constitutive model enables the predictions of the material softening effect under high frequency impacts. Both the finite element analysis incorporating the CMA and experimental validations have been conducted with a specifically designed ultrasonic vibrator that can generate high frequency impacts. The study concludes that the CMA can reliably capture the material deformation responses to ultra-high strain rates and that it is applicable to problems when acoustoplasticity becomes important.