超高强度平头圆柱形弹体对低碳合金钢板的高速撞击实验
发布时间：2018-10-18 10:51
【摘要】：为分析不同组分低碳合金钢板抗超高强度低碳合金钢弹体的高速撞击性能及破坏模式,以两种典型防弹特种钢SS、AS以及常见的Q235A钢为研究对象,通过静态拉伸、静态压缩及动态压缩测试,获得静态拉伸和压缩性能参数以及1 000~6 000s~(-1)应变率范围内的力学行为,分析了材料组分与力学性能的相关性。采用弹道枪加载撞击方法,获得了两种超高强度合金钢平头圆柱形弹体对3种钢板(14.5~15.9mm厚)的弹道极限速度,通过分析获得了不同工况下的极限比吸收能,讨论了合金钢板在弹体高速撞击下破坏模式的差异,分析了材料力学性能与破坏模式的相关性。研究表明:3种合金钢板抗弹体撞击性能与材料屈服强度正相关,但其性能间的差异远小于屈服强度间的差异;在超高强度合金钢平头圆柱形弹体的高速撞击下,3种钢板的失效机制与其力学性能密切相关,Si和Mn含量高的AS钢呈硬脆性特征,其断裂失效主要取决于材料的剪切强度,而Si和Mn含量较低的SS钢和Q235A钢具有良好的塑性,其断裂失效主要取决于材料的压缩强度和剪切强度。
[Abstract]:In order to analyze the high speed impact resistance and failure mode of different components low carbon alloy steel plate, two typical bulletproof special steel SS,AS and Q235A steel were studied by static tensile. Static and dynamic compression tests were performed to obtain the static tensile and compression properties and the mechanical behavior in the strain rate range of 1000 ~ (-1) s ~ (-1). The correlation between the composition and the mechanical properties of the materials was analyzed. The ballistic limit velocities of two kinds of ultra-high strength alloy steel flat-head cylindrical projectiles to three kinds of steel plates (14.5~15.9mm thickness) are obtained by means of ballistic gun loading and impingement, and the limit specific absorption energies under different working conditions are obtained by analyzing the ballistic limit velocities of three kinds of steel plates (14.5~15.9mm thickness). The difference of failure mode of alloy steel plate under high velocity impact is discussed, and the correlation between mechanical properties of materials and failure mode is analyzed. The results show that the impact resistance of three kinds of alloy steel plates is positively related to the yield strength of the material, but the difference between the three kinds of alloy steel plates is much smaller than the difference of the yield strength. The failure mechanism of three kinds of steel plates is closely related to their mechanical properties under the high velocity impact of the cylindrical projectile with flat head of ultra-high strength alloy steel. The AS steel with high Si and Mn content shows the characteristics of hard brittleness, and its fracture failure mainly depends on the shear strength of the material. However, SS steel and Q235A steel with lower Si and Mn content have good plasticity, and their fracture failure mainly depends on the compressive strength and shear strength of the material.
【作者单位】： 北京理工大学爆炸科学与技术国家重点实验室;
【基金】：国家自然科学基金项目(11402027)
【分类号】：TG142.15
本文编号：2278896
[Abstract]:In order to analyze the high speed impact resistance and failure mode of different components low carbon alloy steel plate, two typical bulletproof special steel SS,AS and Q235A steel were studied by static tensile. Static and dynamic compression tests were performed to obtain the static tensile and compression properties and the mechanical behavior in the strain rate range of 1000 ~ (-1) s ~ (-1). The correlation between the composition and the mechanical properties of the materials was analyzed. The ballistic limit velocities of two kinds of ultra-high strength alloy steel flat-head cylindrical projectiles to three kinds of steel plates (14.5~15.9mm thickness) are obtained by means of ballistic gun loading and impingement, and the limit specific absorption energies under different working conditions are obtained by analyzing the ballistic limit velocities of three kinds of steel plates (14.5~15.9mm thickness). The difference of failure mode of alloy steel plate under high velocity impact is discussed, and the correlation between mechanical properties of materials and failure mode is analyzed. The results show that the impact resistance of three kinds of alloy steel plates is positively related to the yield strength of the material, but the difference between the three kinds of alloy steel plates is much smaller than the difference of the yield strength. The failure mechanism of three kinds of steel plates is closely related to their mechanical properties under the high velocity impact of the cylindrical projectile with flat head of ultra-high strength alloy steel. The AS steel with high Si and Mn content shows the characteristics of hard brittleness, and its fracture failure mainly depends on the shear strength of the material. However, SS steel and Q235A steel with lower Si and Mn content have good plasticity, and their fracture failure mainly depends on the compressive strength and shear strength of the material.
【作者单位】： 北京理工大学爆炸科学与技术国家重点实验室;
【基金】：国家自然科学基金项目(11402027)
【分类号】：TG142.15
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