Page 26 - 《含能材料》2018年优秀论文

692 FENG Song，RAO Guo‑ning，PENG Jin‑hua

Table 5 Material parameters of JWL‑Miller model for explo‑
sives

sample A/GPa B/GPa R1 R2 ω E0/GJ·m -3
2 # 1887.64 162.39 6.5 2.75 0.547 11.50
4 # 908.2 12.03 4.77 1.036 0.25 10.20
sample D/m·s ‑1 p CJ /GPa Q/GJ·m ‑3 a m n

2 # 9100 40 - - - -
4 # 8780 25 4.65 0.028 0.5 0.167
a. shock wave
nized explosive had not light inside. So the sample
2 was used as an example. Figure 7 shows the ex‑
#
perimental and numerical simulation of bubble pul‑
sation of sample 2 .
#

b. bubble pulse
a. experimental Fig. 8 Pressure histories of shock wave and bubble pulse
calculated using AUTODYN at the distance of 0.7 m from
the sample 2 #

b. simulated
Fig. 7 Comparison of experimental and simulated results for
sample 2 about the first pulse of the bubble
#
During the expansion and collapse，the calcu‑
lated motion was in excellent agreement with that in a. shock wave
experiment. The entire process of bubble pulsation
could be clearly and directly observed in the numeri‑
cal simulation. The simulation results of the bubble
pulse properties and bubble pulsation phase were in
good agreement with experimental results. Except
the light and size，the movement of bubbles be‑
tween sample 2 and sample 4 were the same. In
#
#
comparison with experimental values，the explosion
products did not escape from the surface of bubble. b. bubble pulse
During the process of bubble pulsation，the experi‑ Fig. 9 Pressure histories of shock wave and bubble pulse cal‑
mental results were corresponding with simulation culated using AUTODYN at the distance of 0.7 m from the
results. Figure 8 and Fig.9 are show that the pressure sample 4 #

Chinese Journal of Energetic Materials，Vol.26, No.8 , 2018（686-695） 含能材料 www.energetic-materials.org.cn