Dynamic Responses of a Monolithic Beam Subjected to High-Velocity Impact Loading, With Occupant Safety Considered

ZHANG Dujiang; ZHAO Zhenyu; ZHANG Zhiyang; GAO Huiyao; LU Tianjian

doi:10.21656/1000-0887.450325

Volume 46 Issue 3

Mar. 2025

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Article Navigation > Applied Mathematics and Mechanics > 2025 > 46(3): 271-282

ZHANG Dujiang, ZHAO Zhenyu, ZHANG Zhiyang, GAO Huiyao, LU Tianjian. Dynamic Responses of a Monolithic Beam Subjected to High-Velocity Impact Loading, With Occupant Safety Considered[J]. Applied Mathematics and Mechanics, 2025, 46(3): 271-282. doi: 10.21656/1000-0887.450325

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Dynamic Responses of a Monolithic Beam Subjected to High-Velocity Impact Loading, With Occupant Safety Considered

doi: 10.21656/1000-0887.450325

1. AECC Sichuan Gas Turbine Establishment, Chengdu 610500, P.R.China;
2. State Key Laboratory of Mechanics and Control for Aerospace Structures,Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P.R.China;
3. MIIT Key Laboratory of Multifunctional Lightweight Materials and Structures (MLMS),Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P.R.China

Funds:

The National Science Foundation of China(11972185；12002156)

Received Date: 2024-12-09
Rev Recd Date: 2024-12-30

Available Online: 2025-04-02

Publish Date: 2025-03-01

Abstract

Abstract

To improve the protective structure design of armored vehicles against intensive blast loadings and ensure the safety of occupants, the dynamic responses of a monolithic beam subjected to impact loading, with occupant safety considered, was studied. First, experiments were carried out to characterize the dynamic performances of the monolithic beam attached with a mass-spring-damping system subjected to foam projectile impact. Then, the numerical simulations and theoretical analysis were conducted. At a relatively high foam projectile velocity, there is good agreement between numerical, experimental and theoretical results. The effects of the foam projectile velocity, the block mass, the spring stiffness, and the damping coefficient on the peak displacements and accelerations of the mass block were discussed by means of the numerical model. The results show that, the peak displacements and accelerations of the mass block increase with the foam projectile velocity. The block mass and the spring stiffness have little effect on the peak displacements and accelerations of the mass block. The peak accelerations of the mass block decrease with the block mass, but increase with the spring stiffness and the damping coefficient. The theoretical and numerical methods have verified correctness, providing a support for the rapid design of high-performance protective structures against intensive impact loads.
- impact,
- occupant safety,
- mass-spring-damping system,
- dynamic response

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References(34)

References

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