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Abstract
Temperature rise in the local area adjacent to the nose of a penetrator is studied in an uncoupled approach. The high-rate of change in temperature in penetration is modelled by the thermal wave model. For steel penetrating into an aluminum target, the cavity-expansion model is used to estimate the particle velocity and the radial stress at the wall. Both effects of heat generation by high-speed friction and intensified plasticity are included. The thermal wavefront in relation to the particle velocity is specially emphasized. Depending on the penetration speed, it has been found that the local temperature rise in the aluminum target ranges from several hundred to a thousand degrees over the ambient. The material boundary layer in which such a temperature rise occurred is on the order of microns.
Published Version
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