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Spherical and cylindrical cavity expansion models based prediction of penetration depths of concrete targets

The cavity expansion theory is most widely used to predict the depth of penetration of concrete targets. The main purpose of this work is to clarify the differences between the spherical and cylindrical cavity expansion models and their scope of application in predicting the penetration depths of co...

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Detalles Bibliográficos
Autores principales: Jin, Xiaochao, Yang, Huawei, Fan, Xueling, Wang, Zhihua, Shu, Xuefeng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5413032/
https://www.ncbi.nlm.nih.gov/pubmed/28463972
http://dx.doi.org/10.1371/journal.pone.0175785
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author Jin, Xiaochao
Yang, Huawei
Fan, Xueling
Wang, Zhihua
Shu, Xuefeng
author_facet Jin, Xiaochao
Yang, Huawei
Fan, Xueling
Wang, Zhihua
Shu, Xuefeng
author_sort Jin, Xiaochao
collection PubMed
description The cavity expansion theory is most widely used to predict the depth of penetration of concrete targets. The main purpose of this work is to clarify the differences between the spherical and cylindrical cavity expansion models and their scope of application in predicting the penetration depths of concrete targets. The factors that influence the dynamic cavity expansion process of concrete materials were first examined. Based on numerical results, the relationship between expansion pressure and velocity was established. Then the parameters in the Forrestal’s formula were fitted to have a convenient and effective prediction of the penetration depth. Results showed that both the spherical and cylindrical cavity expansion models can accurately predict the depth of penetration when the initial velocity is lower than 800 m/s. However, the prediction accuracy decreases with the increasing of the initial velocity and diameters of the projectiles. Based on our results, it can be concluded that when the initial velocity is higher than the critical velocity, the cylindrical cavity expansion model performs better than the spherical cavity expansion model in predicting the penetration depth, while when the initial velocity is lower than the critical velocity the conclusion is quite the contrary. This work provides a basic principle for selecting the spherical or cylindrical cavity expansion model to predict the penetration depth of concrete targets.
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spelling pubmed-54130322017-05-14 Spherical and cylindrical cavity expansion models based prediction of penetration depths of concrete targets Jin, Xiaochao Yang, Huawei Fan, Xueling Wang, Zhihua Shu, Xuefeng PLoS One Research Article The cavity expansion theory is most widely used to predict the depth of penetration of concrete targets. The main purpose of this work is to clarify the differences between the spherical and cylindrical cavity expansion models and their scope of application in predicting the penetration depths of concrete targets. The factors that influence the dynamic cavity expansion process of concrete materials were first examined. Based on numerical results, the relationship between expansion pressure and velocity was established. Then the parameters in the Forrestal’s formula were fitted to have a convenient and effective prediction of the penetration depth. Results showed that both the spherical and cylindrical cavity expansion models can accurately predict the depth of penetration when the initial velocity is lower than 800 m/s. However, the prediction accuracy decreases with the increasing of the initial velocity and diameters of the projectiles. Based on our results, it can be concluded that when the initial velocity is higher than the critical velocity, the cylindrical cavity expansion model performs better than the spherical cavity expansion model in predicting the penetration depth, while when the initial velocity is lower than the critical velocity the conclusion is quite the contrary. This work provides a basic principle for selecting the spherical or cylindrical cavity expansion model to predict the penetration depth of concrete targets. Public Library of Science 2017-05-02 /pmc/articles/PMC5413032/ /pubmed/28463972 http://dx.doi.org/10.1371/journal.pone.0175785 Text en © 2017 Jin et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Jin, Xiaochao
Yang, Huawei
Fan, Xueling
Wang, Zhihua
Shu, Xuefeng
Spherical and cylindrical cavity expansion models based prediction of penetration depths of concrete targets
title Spherical and cylindrical cavity expansion models based prediction of penetration depths of concrete targets
title_full Spherical and cylindrical cavity expansion models based prediction of penetration depths of concrete targets
title_fullStr Spherical and cylindrical cavity expansion models based prediction of penetration depths of concrete targets
title_full_unstemmed Spherical and cylindrical cavity expansion models based prediction of penetration depths of concrete targets
title_short Spherical and cylindrical cavity expansion models based prediction of penetration depths of concrete targets
title_sort spherical and cylindrical cavity expansion models based prediction of penetration depths of concrete targets
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5413032/
https://www.ncbi.nlm.nih.gov/pubmed/28463972
http://dx.doi.org/10.1371/journal.pone.0175785
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