Research on the Influence of JWL EOS Parameters of Explosives on Numerical Simulation of Underwater Explosion

LI Hao; ZHANG Yuzhu; HU Haoran; ZHANG Xuan; WANG Jin; LUO Yi

doi:10.11993/j.issn.2096-3920.2025-0023

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LI Hao, ZHANG Yuzhu, HU Haoran, ZHANG Xuan, WANG Jin, LUO Yi. Research on the Influence of JWL EOS Parameters of Explosives on Numerical Simulation of Underwater Explosion[J]. Journal of Unmanned Undersea Systems. doi: 10.11993/j.issn.2096-3920.2025-0023

Citation:

LI Hao, ZHANG Yuzhu, HU Haoran, ZHANG Xuan, WANG Jin, LUO Yi. Research on the Influence of JWL EOS Parameters of Explosives on Numerical Simulation of Underwater Explosion[J]. Journal of Unmanned Undersea Systems. doi: 10.11993/j.issn.2096-3920.2025-0023

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Research on the Influence of JWL EOS Parameters of Explosives on Numerical Simulation of Underwater Explosion

doi: 10.11993/j.issn.2096-3920.2025-0023

LI Hao¹,
ZHANG Yuzhu¹,
HU Haoran¹,
ZHANG Xuan²,
WANG Jin^{2, 3},
LUO Yi^{2, 3}

1.
Changjiang Survey, Planning, Design and Research Co., Ltd., Wuhan 430010, China
2.
School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, China
3.
Sanya Science, Education and Innovation Park, Wuhan University of Technology, Sanya 572024, China

Received Date: 2025-02-10
Accepted Date: 2025-03-11
Rev Recd Date: 2025-02-21

Available Online: 2025-07-21

Abstract

Abstract

The equation of state for detonation products is one of the fundamental equations in computational explosion mechanics, changes in the values of its parameters directly affect the results of numerical analysis. This study focuses on the influence of the parameters of the JWL equation of state for TNT explosives on the numerical simulation of underwater explosion shock waves. Based on the LS-DYNA finite element program, a refined one - dimensional numerical model of underwater explosion is constructed by comparing with empirical formulas. An in - depth analysis is conducted on the variation laws of key processes such as the pressure attenuation of explosion shock waves and energy release under different values of each parameter in the JWL equation of state for detonation products.The results show that the parameters of the JWL equation of state have significant impacts on parameters such as the peak pressure, specific impulse, and specific shock wave energy of underwater explosion shock waves, and the impacts vary at different distances from the explosion center. In terms of peak pressure, in the near field range, the influence of R1 is much greater than that of other parameters, while in the middle and far field ranges, E0 has the greatest influence. Moreover, the higher the peak pressure, the faster the attenuation. In terms of specific impulse, changes in E0 have the greatest influence, and when E0 is changed, the calculated value of specific impulse has a linear relationship with the parameter value. Similarly, E0 has the greatest influence on specific shock wave energy.
- underwater explosion,
- JWL equation of state,
- numerical simulation

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References(24)

References

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