Research ArticleNo Access

Dynamic Response of the 300mm-Diameter Projectile Impacting RC Slab

Jing Liang

https://orcid.org/0009-0008-9388-9596

School of Civil and Architecture Engineering, Xi’an Technological University, Xi’an 710021, P. R. China

E-mail Address: lj15735103859@163.com

Corresponding author.

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Hua Huang

School of Civil and Architecture Engineering, Xi’an Technological University, Xi’an 710021, P. R. China

E-mail Address: huanghua23247@163.com

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Min Huang

School of Civil and Architecture Engineering, Xi’an Technological University, Xi’an 710021, P. R. China

E-mail Address: huangmin@xatu.edu.cn

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, and

Huiping Liu

School of Civil and Architecture Engineering, Xi’an Technological University, Xi’an 710021, P. R. China

E-mail Address: liuhuiping@xatu.edu.cn

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https://doi.org/10.1142/S0219455424501943Cited by:0 (Source: Crossref)

Abstract

Some critical civil infrastructure projects, such as government offices, command buildings, airport stations, and transportation routes, are highly susceptible to missile attacks during conflicts. To investigate the influence of impact velocity ( $v_{0})$ and impact location on the dynamic responses of RC slabs and projectiles, finite element models were established to simulate the perforation of the 300mm-diameter projectile into the 100mm-thick RC slab. The results indicate that both $v_{0}$ and impact location have effects on the relative relationship between kinetic energy and internal energy of the RC slab. Stresses exceeding 48MPa ( $f_{c})$ and maximum displacement of the RC slab are primarily concentrated around the bullet hole, extending to a distance of approximately 450mm (1.5 $d)$ from the impact center. After perforation, the relationship between velocity loss ratio and $v_{0}$ , as well as the relationship between kinetic energy loss ratio and $v_{0}$ , conforms to the power function distribution. Considering the damage to the RC slab, the Chen model, Peng model, and Konyaew model of the residual velocity prove more suitable for this working condition, especially the Chen model.

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