Safety analysis of reactive material penetrator under high overload conditions
In order to study the action characteristics of mechanical overload environment on reactive penetrator under ultra-high-speed launching conditions,the one-dimensional stress wave propagation model of the penetrator was constructed under the condition that the mass fraction ratio of the reactive material PTFE and Al was 73.5％:26.5％,while the acceleration overload was applied to 33 000g with the duration of 10 ms,and the maximum stress of the reactive core obtained was 62.56 MPa.Based on the LS-DNYA simulation software,the penetrator model was constructed and tested.The simulation showes that the outlet velocity reaches 2 474.5 m/s,the maximum stress of the reactive core in the launch is 59.35 MPa,and the theoretical and simulation error is 5.12％,which does not reach the threshold pressure of the reactive material reaction.The results show that the reactive mate-rial ratio scheme meets the safety requirements under ultra-high speed overload environment.
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