Numerical method for simulating Steven test basedon thermo-mechanical coupled material model

Lou Jianfeng; Zhang Yangeng; Zhou Tingting; Hong Tao

doi:10.11883/1001-1455(2017)05-0807-06

Volume 37 Issue 5

Jul. 2017

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Article Navigation > Explosion And Shock Waves > 2017 > 37(5): 807-812

Lou Jianfeng, Zhang Yangeng, Zhou Tingting, Hong Tao. Numerical method for simulating Steven test basedon thermo-mechanical coupled material model[J]. Explosion And Shock Waves, 2017, 37(5): 807-812. doi: 10.11883/1001-1455(2017)05-0807-06

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Lou Jianfeng, Zhang Yangeng, Zhou Tingting, Hong Tao. Numerical method for simulating Steven test basedon thermo-mechanical coupled material model[J]. Explosion And Shock Waves, 2017, 37(5): 807-812. doi: 10.11883/1001-1455(2017)05-0807-06

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Numerical method for simulating Steven test basedon thermo-mechanical coupled material model

doi: 10.11883/1001-1455(2017)05-0807-06

Institute of Applied Physics and Computational Mathematics, Beijing 100094, China

Received Date: 2016-01-29
Rev Recd Date: 2016-06-12
Publish Date: 2017-09-25

Abstract

Abstract

In this paper, we figured out a numerical simulation method involving the mechanical, thermal and chemical properties of the Steven test based on the thermo-mechanical coupled material model to simulate the Steven test of the plastic bonded explosive 9501. In this model, the stress-strain relationship is described by the dynamic plasticity model, the impact-induced thermal effect depicted by the isotropic thermal material model, the chemical reaction is described by the Arrhenius reaction rate law, with the effects of heating and melting on mechanical properties and thermal properties of materials also taken into account. Specific to the standard Steven test, the numerical model was validated by comparing the obtained deformation of the target and the ignition threshold of the PBX 9501 with the experimental data in the references. The calculated results are in good agreement with the experimental data, suggesting that this method is capable of simulating the Steven test. Compared to the previous models, this model does not need to incorporate experiential ignition criterion and therefore can be used more widely in the study of thermo-mechanical responses and local ignition of explosives subjected to low velocity impact.
- Steven test,
- thermo-mechanical coupled model,
- impact,
- non-shock initiation

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References

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