Calculation on multi-step thermal decomposition of HMX-and TATB-based composite explosive under cook-off conditions

Ma Xin; Chen Lang; Lu Feng; Wu Jun-ying

doi:10.11883/1001-1455(2014)01-0067-08

Volume 34 Issue 1

Mar. 2014

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Ma Xin, Chen Lang, Lu Feng, Wu Jun-ying. Calculation on multi-step thermal decomposition of HMX-and TATB-based composite explosive under cook-off conditions[J]. Explosion And Shock Waves, 2014, 34(1): 67-74. doi: 10.11883/1001-1455(2014)01-0067-08

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Calculation on multi-step thermal decomposition of HMX-and TATB-based composite explosive under cook-off conditions

doi: 10.11883/1001-1455(2014)01-0067-08

State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China

Funds: Supported by the National Basic Research Program of China (973 Program) (61383)

Received Date: 2012-09-03
Rev Recd Date: 2012-10-20
Publish Date: 2014-01-25

Abstract

Abstract

The thermal decomposition of each component in the composite explosive was described by the multi-step chemical kinetics model.A multi-component grid unit calculation method was put forward to calculate the thermal decomposition reaction processes of the HMX and TATB based composite explosives under the cook-off conditions.And the cook-off tests were carried out to measure the temperatures and ignition times of the explosives and verify the accuracies of the calculations.The thermal reaction performances of the composite explosives were analyzed by changing the mass fraction of each component in them.The results show that the exothermic decomposition of the HMX predominates in the thermal decomposition process of the HMX/TATB composite explosive.Moreover, the ignition time and temperature of the composite explosives increase with the increasing of the TATB contents in the composite explosives.
- mechanics of explosion,
- multistep reaction,
- multicomponent grid unit,
- composite explosive,
- cook-off

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References

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