Study on mechanical properties and damage characteristics of booster explosives under static compression

XIAO Xiangdong; XIAO Youcai; HONG Zhixiong; XIONG Yanyi; ZHAO Huiping; WANG Zeyu; WANG Zhijun

doi:10.11883/bzycj-2021-0257

Volume 42 Issue 4

May 2022

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XIAO Xiangdong, XIAO Youcai, HONG Zhixiong, XIONG Yanyi, ZHAO Huiping, WANG Zeyu, WANG Zhijun. Study on mechanical properties and damage characteristics of booster explosives under static compression[J]. Explosion And Shock Waves, 2022, 42(4): 042302. doi: 10.11883/bzycj-2021-0257

Citation:

XIAO Xiangdong, XIAO Youcai, HONG Zhixiong, XIONG Yanyi, ZHAO Huiping, WANG Zeyu, WANG Zhijun. Study on mechanical properties and damage characteristics of booster explosives under static compression[J]. Explosion And Shock Waves, 2022, 42(4): 042302. doi: 10.11883/bzycj-2021-0257

Citation:

XIAO Xiangdong, XIAO Youcai, HONG Zhixiong, XIONG Yanyi, ZHAO Huiping, WANG Zeyu, WANG Zhijun. Study on mechanical properties and damage characteristics of booster explosives under static compression[J]. Explosion And Shock Waves, 2022, 42(4): 042302. doi: 10.11883/bzycj-2021-0257

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Study on mechanical properties and damage characteristics of booster explosives under static compression

doi: 10.11883/bzycj-2021-0257

1.
College of Mechatronic Engineering, North University of China, Taiyuan 030051, Shanxi, China
2.
713th Research Institute of China State Shipbuilding Corporation, Zhengzhou 450015, Henan, China

Received Date: 2021-06-30
Rev Recd Date: 2021-09-16

Available Online: 2022-03-31

Publish Date: 2022-05-09

Abstract

Abstract

In order to study the static compression mechanical properties and damage characteristics of the JH-14C booster explosive, quasi-static compressive experiments were performed on a testing machine equipped with an environmental chamber (INSTRON). According to the GJB 770B–2005 powder test method, dimensions of the cylindrical specimen were set as $\varnothing $12.5 mm×12.5 mm in the static compressive experiments. During compression, only one extensometer was used. All experiments were performed at a crosshead speed of 0.012 5, 0.062 5, 0.125, 0.625 and 1.25 mm/s at room temperature (25 °C), which led to a nominal strain rate of 0.001, 0.005, 0.01, 0.05 and 0.1 s⁻¹, respectively. The average stress-strain values and standard deviations were calculated using five replicable experiments for each condition. The experimental results were compared with X0242 and PBX-9501, and the mechanical properties of JH-14C were analyzed. According to the mechanical properties of JH-14C at low strain rates, the original Ramberg-Osgood constitutive relationship was modified, and a nonlinear constitutive model including the strain rate term was established to describe the mechanical behavior of JH-14C at low strain rates. The micro morphologies of the recovered samples was observed by a scanning electron microscope (SEM) and compared with that of PBX-9501. The damage mode was analyzed to characterize the damage characteristics of JH-14C under quasi-static compression. The results show that the compressive strength of JH-14C increases with the increase of strain rate. The validity of the constitutive model was verified by comparing the experimental and calculated results. In the quasi-static compression experiments, the energetic particles and the binder were debonded. With the increase of the pressure, the original crack and the micro-crack formed by debonding on the energetic particles were converged and coalesced to form a macro crack, which led to the rupture and failure of the explosive.
- JH-14C,
- booster explosive,
- quasi-static,
- strain rate,
- constitutive model,
- damage mode

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References(16)

References

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