Modelling of projectile penetration into lightweight expanded clay aggregate

    Research output: Contribution to journalArticleScientificpeer-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

    @article{b2a12a0239204aacb68ec6206883360a,
    title = "Modelling of projectile penetration into lightweight expanded clay aggregate",
    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",
    year = "2016",
    doi = "10.1007/s40870-016-0078-y",
    language = "English",
    volume = "2",
    pages = "425--437",
    journal = "Journal of Dynamic Behavior of Materials",
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    number = "4",

    }

    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 journalArticleScientificpeer-review

    TY - JOUR

    T1 - Modelling of projectile penetration into lightweight expanded clay aggregate

    AU - Kuutti, Juha

    PY - 2016

    Y1 - 2016

    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.

    KW - lightweight expanded clay aggregate

    KW - LECA

    KW - penetration experiments

    KW - crushing

    KW - phenomenological model

    U2 - 10.1007/s40870-016-0078-y

    DO - 10.1007/s40870-016-0078-y

    M3 - Article

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    JO - Journal of Dynamic Behavior of Materials

    JF - Journal of Dynamic Behavior of Materials

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