Abstract
Recently, the lightweight high-entropy alloys (LHEAs) have been widely used in shaped charge warhead due to their excellent mechanical properties and adaptability to detonation driving, which is expected to provide help for the lightweight design of shaped charge. The Johnson-Cook thermoviscoplastic dynamic constitutive equation of CoCrFeNiTi five-element lightweight high-entropy alloy is obtained by the experiment of dynamic mechanical properties. Therefore, a multilayer charge structure with wave shaper is designed. The feasibility of using the material as a liner is verified through numerical simulation and experiment. The influence of liner thickness on its shaped jet is obtained. The results show that the increase in the thickness of liner can improve the head density of the shaped jet and help to improve the lateral effect. When the thickness of liner is 5 mm, the jet can completely penetrate the four layers of 25 mm-thick C40 concrete target and achieve the damage effect of large area collapse of the target plate. A penetrating channel with a diameter of about 75 mm is formed inside the target.
| Translated title of the contribution | Research on Behavior of Lightweight High鄄entropy Alloy Jet Penetrating Concrete Targets |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 60-69 |
| Number of pages | 10 |
| Journal | Binggong Xuebao/Acta Armamentarii |
| Volume | 45 |
| DOIs | |
| Publication status | Published - 30 Oct 2024 |