Replica model scaling for high strain-rate events

Abstract Scaled models are often used in experimental investigations as full scale tests are expensive and may be impossible to conduct correctly. This is especially true for high strain-rate events such as penetration mechanics. A recent study suggested there is a scaling effect due to strain rate effects. This effort attempts to quantify the magnitude of that effect based on hydrocode simulations using the Johnson-Cook material model coupled with experimental data found in the open literature. The results show that a strain rate effect exists although it is less than originally suggested.