摘要
弹体对材料的侵彻过程同时也是材料损伤与能量耗散的过程,因而,靶体材料韧性对弹性侵彻深度有重要影响。但是,现有经验公式均不能反映钢纤维混凝土材料韧性的影响。针对此不足,引入钢纤维混凝土材料吸能因子η,对试验数据进行了回归分析,并利用GBU28钻地弹实战侵彻结果对回归公式进行了修订。修订后的公式不仅能反映弹体侵彻过程中的材料强度作用,而且在一定程度上也反映了材料的韧度作用。该公式适用于弹体侵彻钢纤维混凝土深度的计算,并且保持了原公式的简单实用的特点,对于相关工程实践与科研有一定的参考作用。
When a projectile penetrates materials, the materials are damaged and the projectile energy is consumed. Consequentially, the material toughness will affect the penetration depth significantly. But, the existing experiential formulas to calculate the penetration depth in steel fiber concrete can＇ t reflect its effect. In this paper, an energy absorption factor of material is introduced and the test data were regressed to establish a modified formula which can reflect not only the effect of the material toughness but also the intensity in the penetration process. This formula is applicable for the calculation of penetration depth in the steel fiber concrete and provides an important reference for the relevant projects and scientific researches.
出处
《兵工学报》
EI
CAS
CSCD
北大核心
2005年第4期477-480,共4页
Acta Armamentarii
关键词
爆炸力学
钢纤维混凝土
侵彻深度
韧性
吸能因子
回归分析
explosive mechanics
steel fiber concrete
penetration depth
tenacity
energy absorption factor
regression analysis
