论文成果
Resistance of cement-based materials against high-velocity small caliber deformable projectile impact
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发表刊物：
International Journal of Impact Engineering
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关键字：
Projectile impact; Deformable; Penetration depth; Relative hardness; Concrete; UHPC
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摘要：
This paper presents an experimental study on the resistance of cement-based materials across a wide range of compositions and material properties, against the impact of 8.0-mm-diameter, 7.8-g-mass, conical-nosed deformable ASSAB XW-42 steel and copper projectiles at velocities of approximately 400 m/s, in terms of the penetration depth. The cement-based materials investigated include cement pastes, mortars, concretes, engineered cementitious composites (ECCs), and ultra-high performance concretes (UHPCs) with compressive strengths from 37.9 to 229.4 MPa and elastic moduli from 18.7 to 108.8 GPa. For the range of relative characteristic properties between projectile and target considered, the relative effective hardness index (REH) is shown to provide a good characterization of the penetration depth as well as the projectile deformation including relative length change, diameter change, and mass loss. For the deformable penetration regime investigated, two sub-regimes are identified corresponding to a decreasing REH, i.e. regime I with projectile penetration mechanism and regime II with projectile deformation mechanism. It is also found that UHPCs exhibit better impact resistance against deformable projectiles than high performance concretes (HPCs) with granite coarse aggregate, whereas a reversed trend is observed when non-deformable projectiles are considered. The experimental results of this study provide insights into the quick estimation of penetration depth and guidance on the selection of protective materials for practical engineering applications.
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全部作者：
Min-Hong Zhang
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第一作者：
Fengling Zhang
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论文类型：
期刊论文
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通讯作者：
Leong Hien Poh
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学科门类：
工学
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一级学科：
土木工程
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文献类型：
J
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卷号：
144
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页面范围：
103629
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是否译文：
否
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发表时间：
2020-10-01
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收录刊物：
SCI
上一条：Critical parameters for the penetration depth in cement-based materials subjected to small caliber non-deformable projectile impact
下一条：Ultra-high performance concrete subjected to high-velocity projectile impact: implementation of K&C model with consideration of failure surfaces and dynamic increase factors
