Dynamic response of sandwich panel attached with a double mass-spring-damping system to shallow-buried explosion:Analytical modeling

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外文摘要：How to ensure the safety of occupants has become a challenge for protective design of armored vehicles against intensive blast loadings.In this study,for armored vehicles subjected to shallow-buried explosions,an analytical model was established to characterize the dynamic performance of an all-metallic sandwich floorboard attached with a double mass-spring-damping system(mimicking seat and occupant),with the former consisting of a front face,a core and a rear face.For validation,numerical simulations with the method of finite elements(FE)were performed.Good agreement between analytical predictions and numerical results was achieved.The analytical model was then employed to quantify the effects of explosive mass,yield stress of material make,configurational parameters of sandwich panel,spring stiffness,and damping coefficient on dynamic response of the sandwich panel and double mass-spring-damping system.With increasing explosive mass and decreasing yield stress of material make,the peak displacements of rear face,seat and occupant were all found to increase.As core relative density was increased,these peak displacements also increased when the ratio of face thickness to core height was relatively small.Increasing the ratio of face thickness to core height led to increased peak accelerations of seat and occupant.The peak displacement of rear face was insensitive to the increase of either spring stiffness or damping coefficient,while the peak acceleration of occupant increased with increasing spring stiffness.Upon increasing the damping coefficient between the rear face and seat or that between the seat and occupant or both,the peak acceleration of occupant increased.With occupant safety duly considered,the proposed analytical model provides useful guidance for designing high-performance protective structures for armored vehicles subjected to intensive blast loadings.

外文关键词：

analytical modelshallow-buried explosionsandwich paneloccupant safetymass-spring-damping system

作者：

ZHANG DuJiang、ZHAO ZhenYu、GAO HuiYao、LU TianJian

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作者单位：

State Key Laboratory of Mechanics and Control for Aerospace Structures,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China

MIIT Key Laboratory of Multifunctional Lightweight Materials and Structures(MLMS),Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China

基金：

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaResearch Fund of State Key Laboratory of Mechanics and Control of Mechanical StructuresFund of Prospective Layout of Scientific Research for NUAAPriority Academic Program Development of Jiangsu Higher Education Institutions(PAPD)

项目编号：

1197218512002156MCMS-I-0222K01

出版年：

2024

DOI：

10.1007/s11431-023-2375-0

中国科学:技术科学(英文版)

中国科学院

中国科学:技术科学(英文版)

CSTPCDEI

影响因子：1.056

ISSN：1674-7321

年,卷(期)：2024.67(2)

参考文献量48