Numerical Investigation on Damage and Failure of UHPC Targets Subjected to Dislocation Multi-Attacks

ZONG Xianghua; WANG Yin; KONG Xiangzhen; JIANG Yating; SUN Liuyang; YUAN Juncheng; YANG Taochun

doi:10.11858/gywlxb.20230834

Volume 38 Issue 3

Jun 2024

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Chinese Journal of High Pressure Physics > 2024 > 38(3): 034201.

ZONG Xianghua, WANG Yin, KONG Xiangzhen, JIANG Yating, SUN Liuyang, YUAN Juncheng, YANG Taochun. Numerical Investigation on Damage and Failure of UHPC Targets Subjected to Dislocation Multi-Attacks[J]. Chinese Journal of High Pressure Physics, 2024, 38(3): 034201. doi: 10.11858/gywlxb.20230834

Citation:

ZONG Xianghua, WANG Yin, KONG Xiangzhen, JIANG Yating, SUN Liuyang, YUAN Juncheng, YANG Taochun. Numerical Investigation on Damage and Failure of UHPC Targets Subjected to Dislocation Multi-Attacks[J]. Chinese Journal of High Pressure Physics, 2024, 38(3): 034201. doi: 10.11858/gywlxb.20230834

Citation:

ZONG Xianghua, WANG Yin, KONG Xiangzhen, JIANG Yating, SUN Liuyang, YUAN Juncheng, YANG Taochun. Numerical Investigation on Damage and Failure of UHPC Targets Subjected to Dislocation Multi-Attacks[J]. Chinese Journal of High Pressure Physics, 2024, 38(3): 034201. doi: 10.11858/gywlxb.20230834

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Numerical Investigation on Damage and Failure of UHPC Targets Subjected to Dislocation Multi-Attacks

doi: 10.11858/gywlxb.20230834

1.
School of Civil Engineering and Architecture, University of Jinan, Jinan 250022, Shandong, China
2.
State Key Laboratory of Disaster Prevention & Mitigation of Explosion & Impact, Army Engineering University of PLA, Nanjing 210007, Jiangsu, China
3.
Tongyuan Design Group Co., Ltd., Jinan 250101, Shandong, China

Received Date: 25 Dec 2023
Rev Recd Date: 20 Jan 2024
Accepted Date: 01 Mar 2024

Available Online: 27 May 2024

Issue Publish Date: 03 Jun 2024

Abstract

Abstract

Based on the LS-DYNA three-dimensional numerical modeling method and the modified Kong-Fang concrete material model, the numerical investigation on damage and failure of ultra-high performance concrete (UHPC) targets subjected to dislocation multi-attacks was carried considering the two-dimensional normal distribution of strike points. The numerical model and material models along with the corresponding parameters were firstly validated by comparing the numerical simulation results of the UHPC targets subjected to projectile penetration followed by explosion to the corresponding test data. Then numerical simulation of the damage and failure in UHPC targets under the multi-attacks by a typical warhead were conducted with 10 groups different circular error probable (CEP) to discuss the effects of the CEP and strike times on the damage and penetration depth. The numerical results demonstrate that the damage evolution caused by the subsequent projectile penetration and explosion continues to develop along the damage area caused by the first projectile penetration. The penetration depth gradually increases as the number of strike increases. The penetration depth calculated with explosion is larger than that calculated without explosion when the CEP is same during multi-attacks. When CEP is equal to 3 m and 1 m, the relative penetration depth is about 1.2 and 1.7, respectively. In other words, the relative penetration depth increased with decreasing of the CEP. The research conclusion shows that the design method of shielding layer thickness in the existing protective design code is dangerous subjected to multi-attacks.
- dislocation multi-attacks,
- ultra-high performance concrete (UHPC),
- damage,
- relative penetration depth

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References(33)

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Numerical Investigation on Damage and Failure of UHPC Targets Subjected to Dislocation Multi-Attacks

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