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Response Amplification Study of the Simulated Projectile under Typical Boundary Conditions

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Abstract

In the process of penetrating a multi-layer target, the local response of charge components is often amplified under relatively low loads. Such response amplification phenomenon may have some influences on the pre-ignition or pre-explosion of the projectile. In this paper, a configuration structure reflecting the basic connection characteristics of the simulated charge and shell is constructed. A theoretical model of the non-linear response for the charge with clearance structure is established based on the configuration characteristics. The phenomenon of local response amplification is discussed from the perspective of structural dynamics. In order to further verify the phenomenon of local response amplification, simulation and test verification of the response amplification for the simulated projectile were carried out by combining finite element numerical simulation and shaking table test. The results show that the projectile’s vibration during the penetration of a multi-layer target may be an important factor in the local response amplification of the charge. The influence of the vibration characteristics for the projectile’s itself needs to be considered in the impact penetration analysis. This study has a strong reference value for understanding the problem of early unintended ignition during the projectile penetration process.

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Funding

This study was funded by the National Natural Science Foundation of China (grant no. 11872059).

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Authors and Affiliations

  1. Institute of Systems Engineering, China Academy of Engineering Physics, 621900, Mianyang, China

    Jun Liang, Xuanhua Fan, Shifu Xiao, Hongyong Chen & Linzhongyang E

  2. Mianyang Teachers’ College, 621000, Mianyang, China

    Jun Liang

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  1. Jun Liang
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  2. Xuanhua Fan
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  3. Shifu Xiao
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  4. Hongyong Chen
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  5. Linzhongyang E
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Correspondence to Jun Liang, Xuanhua Fan, Shifu Xiao, Hongyong Chen or Linzhongyang E.

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Liang, J., Fan, X., Xiao, S. et al. Response Amplification Study of the Simulated Projectile under Typical Boundary Conditions. Mech. Solids 58, 3132–3147 (2023). https://doi.org/10.3103/S0025654423601908

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  • DOI: https://doi.org/10.3103/S0025654423601908

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