Impact Damage Characteristics Simulation of Steel Fiber Reinforced Concrete With the GDEM Software

ZHANG Jin; QI Zhigang; ZHANG Lei

doi:10.21656/1000-0887.450311

Volume 46 Issue 5

May 2025

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Article Navigation > Applied Mathematics and Mechanics > 2025 > 46(5): 621-632

ZHANG Jin, QI Zhigang, ZHANG Lei. Impact Damage Characteristics Simulation of Steel Fiber Reinforced Concrete With the GDEM Software[J]. Applied Mathematics and Mechanics, 2025, 46(5): 621-632. doi: 10.21656/1000-0887.450311

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Impact Damage Characteristics Simulation of Steel Fiber Reinforced Concrete With the GDEM Software

doi: 10.21656/1000-0887.450311

ZHANG Jin^{1, 2
,},
QI Zhigang^{1, 2, 3},
ZHANG Lei^{1, 2
,
,}

1.
State Key Laboratory of Target Vulnerability Assessment, Luoyang, Henan 471023, P.R.China
2.
Institute of Defense Engineering, AMS, Luoyang, Henan 471000, P.R.China
3.
College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin 150001, P.R.China

Received Date: 2024-11-18
Rev Recd Date: 2025-01-31
Publish Date: 2025-05-01

Abstract

Abstract

Steel fiber-reinforced concrete (SFRC) is the most utilized structural material for protective engineering. It is frequently subjected to complex stress states with high strain rates under strong dynamic loads, such as explosions and penetrations. Most current studies on the dynamic mechanical properties of SFRC are limited to 1D stress and 1D strain loading conditions. However, the impact-compression characteristics under 3D stress states are still scarce. Herein the GDEM-BlockDyna numerical simulation software was employed to simulate the damage modes of SFRC under confining pressures and investigate the concrete dynamic mechanical properties. The results indicate that, the peak stress and peak strain of SFRC both increase to different extents with the strain rates. The confining pressure reduces the rate effect on the impact compression strength of SFRC. The GDEM can realistically simulate the effects of strain rate and confining pressure on the dynamic mechanics of materials. In comparison to the finite element method, the GDEM is more effective in simulating the behaviors of steel fiber reinforced concrete, from its intact state to destruction. Furthermore, the GDEM can accurately describe the destruction stage characteristics of SFRC after the peak stress.
- steel fiber reinforced concrete,
- active confining pressure,
- GDEM,
- finite-element method,
- HJC model

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References(24)

References

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