NUMERICAL SIMUATION OF LIGHT-GAS GUN MEMBRANE OPENING
https://doi.org/10.26583/vestnik.2025.2.4
EDN: HROPBI
Abstract
Shock-wave loading is the most commonly used way to study the dynamic properties of the materials since this permits the investigation into compressibility, phase transformations, and some other phenomena that take place in the high-pressure and high-temperature region. Explosive loading devices and light-gas guns are usually used as the shock-wave loading systems. The paper presents numerical evaluations of aluminum membrane opening (destruction) pressure in the high-pressure chamber of the pneumatic light-gas gun. The calculation results are compared with the experimental data. The simulations and experiments were aimed to evaluate the destruction pressure for a batch of membranes having different geometry, i.e. thickness and height of the unnotched part, because the data on the membrane load limits helps predict the pressure in the high-pressure chamber and the flyer acceleration. Besides, the effect of some factors on the membrane opening pressure is considered such as mechanical properties of the membrane material, the number of notches, i.e. stress concentrators on the membrane surface, the shape of notches, etc. The simulations demonstrated that the main factor affecting the spread in the membrane opening pressures is the material properties. To reduce this spread, one should control the material properties and choose the materials with more stable mechanical properties. The conclusions were validated by comparing the membrane testing data with the simulated results.At constant notch depth, the increase in membrane thickness reduces the membrane opening pressure due to higher stress concentration in the radial notches, as evidenced by the experimental data.
About the Authors
M. V. Nikulshin
Federal State Unitary Enterprise «Russian Federal Nuclear Center – Zababakhin All-Russia Research Institute of Technical Physics»
Russian Federation
Russian Federation
Cand.Sc. (Tech), Head of Department.
I. V. Minaev
Federal State Unitary Enterprise «Russian Federal Nuclear Center – Zababakhin All-Russia Research Institute of Technical Physics»
Russian Federation
Russian Federation
Cand.Sc. (Tech.); Head of Laboratory.
I. V. Smirnova
Federal State Unitary Enterprise «Russian Federal Nuclear Center – Zababakhin All-Russia Research Institute of Technical Physics»
Russian Federation
Russian Federation
principal engineer.
D. T. Yusupov
Federal State Unitary Enterprise «Russian Federal Nuclear Center – Zababakhin All-Russia Research Institute of Technical Physics»
Russian Federation
Russian Federation
Head of Laboratory.
A. I. Klenov
Federal State Unitary Enterprise «Russian Federal Nuclear Center – Zababakhin All-Russia Research Institute of Technical Physics»
Russian Federation
Russian Federation
Head of group.
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Review
For citations:
Nikulshin M.V., Minaev I.V., Smirnova I.V., Yusupov D.T., Klenov A.I. NUMERICAL SIMUATION OF LIGHT-GAS GUN MEMBRANE OPENING. Vestnik natsional'nogo issledovatel'skogo yadernogo universiteta "MIFI". 2025;14(2):131-140. (In Russ.) https://doi.org/10.26583/vestnik.2025.2.4. EDN: HROPBI
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