Modelling of projectile penetration into lightweight expanded clay aggregate

Juha Kuutti

    Research output: Contribution to journal › Article › Scientific › peer-review

    Abstract

    This work presents a phenomenological model for estimating projectile penetration into granular lightweight expanded clay aggregate often known as Lightweight expanded clay aggregate (LECA). Laboratory scale penetration experiments in the low-velocity regime performed using LECA are presented. A penetration model based on the mass and momentum balances is proposed and the model parameters are derived from the physical behaviour of the penetrated material. It was found that the penetration behaviour predicted by the model agrees reasonably well with the experimental results for three cases studied in detail in terms of projectile deceleration during the penetration and the final penetration depth as well as for the other cases for which only measured penetration depths were available. Although the proposed model results correspond well with the experiments, further validation and more detailed modelling of the dynamic effects of the assumed deformation mechanisms of the penetrated material are needed.
    Original languageEnglish
    Pages (from-to)425-437
    JournalJournal of Dynamic Behavior of Materials
    Volume2
    Issue number4
    DOIs
    Publication statusPublished - 2016
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    Projectiles
    Clay
    Deceleration
    Momentum
    Experiments
    clay

    Keywords

    • lightweight expanded clay aggregate
    • LECA
    • penetration experiments
    • crushing
    • phenomenological model

    Cite this

    Kuutti, Juha. / Modelling of projectile penetration into lightweight expanded clay aggregate. In: Journal of Dynamic Behavior of Materials. 2016 ; Vol. 2, No. 4. pp. 425-437.
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    abstract = "This work presents a phenomenological model for estimating projectile penetration into granular lightweight expanded clay aggregate often known as Lightweight expanded clay aggregate (LECA). Laboratory scale penetration experiments in the low-velocity regime performed using LECA are presented. A penetration model based on the mass and momentum balances is proposed and the model parameters are derived from the physical behaviour of the penetrated material. It was found that the penetration behaviour predicted by the model agrees reasonably well with the experimental results for three cases studied in detail in terms of projectile deceleration during the penetration and the final penetration depth as well as for the other cases for which only measured penetration depths were available. Although the proposed model results correspond well with the experiments, further validation and more detailed modelling of the dynamic effects of the assumed deformation mechanisms of the penetrated material are needed.",
    keywords = "lightweight expanded clay aggregate, LECA, penetration experiments, crushing, phenomenological model",
    author = "Juha Kuutti",
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    Kuutti, J 2016, 'Modelling of projectile penetration into lightweight expanded clay aggregate', Journal of Dynamic Behavior of Materials, vol. 2, no. 4, pp. 425-437. https://doi.org/10.1007/s40870-016-0078-y

    Modelling of projectile penetration into lightweight expanded clay aggregate. / Kuutti, Juha.

    In: Journal of Dynamic Behavior of Materials, Vol. 2, No. 4, 2016, p. 425-437.

    Research output: Contribution to journal › Article › Scientific › peer-review

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    N2 - This work presents a phenomenological model for estimating projectile penetration into granular lightweight expanded clay aggregate often known as Lightweight expanded clay aggregate (LECA). Laboratory scale penetration experiments in the low-velocity regime performed using LECA are presented. A penetration model based on the mass and momentum balances is proposed and the model parameters are derived from the physical behaviour of the penetrated material. It was found that the penetration behaviour predicted by the model agrees reasonably well with the experimental results for three cases studied in detail in terms of projectile deceleration during the penetration and the final penetration depth as well as for the other cases for which only measured penetration depths were available. Although the proposed model results correspond well with the experiments, further validation and more detailed modelling of the dynamic effects of the assumed deformation mechanisms of the penetrated material are needed.

    AB - This work presents a phenomenological model for estimating projectile penetration into granular lightweight expanded clay aggregate often known as Lightweight expanded clay aggregate (LECA). Laboratory scale penetration experiments in the low-velocity regime performed using LECA are presented. A penetration model based on the mass and momentum balances is proposed and the model parameters are derived from the physical behaviour of the penetrated material. It was found that the penetration behaviour predicted by the model agrees reasonably well with the experimental results for three cases studied in detail in terms of projectile deceleration during the penetration and the final penetration depth as well as for the other cases for which only measured penetration depths were available. Although the proposed model results correspond well with the experiments, further validation and more detailed modelling of the dynamic effects of the assumed deformation mechanisms of the penetrated material are needed.

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    KW - penetration experiments

    KW - crushing

    KW - phenomenological model

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    Kuutti J. Modelling of projectile penetration into lightweight expanded clay aggregate. Journal of Dynamic Behavior of Materials. 2016;2(4):425-437. https://doi.org/10.1007/s40870-016-0078-y

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