Study on Mechanical Properties and Penetration Stability of DNAN Based Explosives Under Additive Effects

Abstract A series of mechanical experiments and penetration tests, for investigating the effects of additives, on DNAN-based explosives were carried out. At various strain rates, the data result that the stress-strain curves range 10 −5 s −1 -10 2 s −1 , were obtained in mechanical experiments by the application of quasi-static and dynamic apparatus. Utilizing the visco-elastic Maxwell model which is calibrated with the experiment data,the dynamic behavior of the explosives could be simulated in penetration process. The results show that the peak stress and displacement of the explosive with binder 1# is smaller than those of the explosive with plasticizer 2# at the same positions. It indicates that the explosive with binder 1# undertake a less severe stress condition than the other, and the explosive with binder 1# may perform more stable. The conclusion of penetration tests which show that both of the additives stabilize the explosive are more effective, coincides with the simulation results.