Numerical Simulation of High-Speed Impact on Regolith Using Compressible and Non-Expanding Fluid Model

Purpose The purpose of this paper is to describe the approach for the design of a jet engine composite air inlet for a new generation of jet trainer aircraft from the perspective of airworthiness requirements regarding high-speed impact resistance. Design/methodology/approach Validated numerical simulation was applied to flat test panels. The final design was optimised and verified by validated numerical simulation and verified by testing on a full-scale demonstrator. High-speed camera measurement and non-destructive testing (NDT) results were used for the verification of the numerical models. Findings The test results of flat test panels confirmed the high durability of the composite structure during inclined high-speed impact with a near-real jet inlet load boundary condition. Research limitations/implications Owing to the sensitivity of the composite material on technology production, the results are limited by the material used and the production technology. Practical implications The application of flat test panels for the verification and tuning of numerical models allows optimised final design of the air inlet and reduces the risk of structural non-compliance during verification tests. Originality/value Numerical models were verified for simulation of the real composite structure based on high-speed camera results and NDT inspection after impact. The proposed numerical model was simplified for application in a real complex design and reduced calculation time.

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Porous Barriers Efficiency Research under the Compact Elements High-Speed Loading (Part Two)

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.303.1 ◽

2020 ◽

Vol 303 ◽

pp. 1-7

Author(s):

E.N. Kramshonkov ◽

A.V. Krainov ◽

Evgeny N. Pashkov

Keyword(s):

Numerical Simulation ◽

Impact Velocity ◽

High Speed ◽

Equal Mass ◽

Tungsten Alloy ◽

Shock Interaction ◽

Initial Speed ◽

Velocity Range ◽

High Speed Impact ◽

Porous Barriers

The paper discusses the results of the numerical simulation of high-speed impact effect of compact projectiles made of steel and tungsten alloy with steel obstacles of equal mass. The obstacles have different initial porosity of the material. Conducted the final evaluation of the penetration speed of the projectile depending on the porosity of the obstacle and the initial speed of the shock interaction. The initial impact velocity range from 1 to 16 [km/s]. The destruction, melting and evaporation of the interacting bodies are taken into account. The analysis of porosity influence evaluation of obstacles material revealed that the protective advantage of porous obstacles disclose at the higher impact velocities, greater than 1.5 [km/s] for steel strikers and 2 [km/s] for projectiles of tungsten alloy. The more impact velocity the more protective effect of porous obstacles.

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Dynamic response and numerical simulation of Al-Sc and Al-Ti alloys under high-speed impact

Transactions of Nonferrous Metals Society of China ◽

10.1016/s1003-6326(15)63638-x ◽

2015 ◽

Vol 25 (2) ◽

pp. 559-570

Author(s):

Wei-gui ZHANG ◽

Liang-ju HE ◽

Pei-jie LI ◽

Yi-cong YE ◽

Xue FENG ◽

...

Keyword(s):

Numerical Simulation ◽

Dynamic Response ◽

High Speed ◽

High Speed Impact ◽

Ti Alloys

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Numerical simulation on high speed impact behavior of Al-W and Al-Ni mixture

Journal of Mechanical Science and Technology ◽

10.1007/s12206-018-0910-5 ◽

2018 ◽

Vol 32 (10) ◽

pp. 4629-4636

Author(s):

Kyungsun Chung ◽

Hyoungjoon Kwon ◽

Jung Su Park ◽

Soonho Song

Keyword(s):

Numerical Simulation ◽

High Speed ◽

Impact Behavior ◽

High Speed Impact

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Porous Barriers Efficiency Research under the Compact Elements High - Speed Loading

Materials Science Forum ◽

10.4028/www.scientific.net/msf.927.48 ◽

2018 ◽

Vol 927 ◽

pp. 48-54 ◽

Cited By ~ 1

Author(s):

E.N. Kramshonkov ◽

A.V. Krainov ◽

E.N. Pashkov

Keyword(s):

Numerical Simulation ◽

Impact Velocity ◽

High Speed ◽

Equal Mass ◽

Tungsten Alloy ◽

Shock Interaction ◽

Initial Speed ◽

Velocity Range ◽

High Speed Impact ◽

Porous Barriers

The paper discusses the results of the numerical simulation of high-speed impact effect of compact projectiles made of steel and tungsten alloy with steel obstacles of equal mass. The obstacles have different initial porosity of the material. Conducted the final evaluation of the penetration speed of the projectile depending on the porosity of the obstacle and the initial speed of the shock interaction. The initial impact velocity range from 1 to 16 [km/s]. The destruction, melting and evaporation of the interacting bodies are taken into account. The analysis of porosity influence evaluation of obstacles material revealed that the protective advantage of porous obstacles disclose at the higher impact velocities, greater than 1.5 [km/s] for steel strikers and 2 [km/s] for projectiles of tungsten alloy. The more impact velocity the more protective effect of porous obstacles.

Download Full-text