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

Abstract: When a projectile penetrates materials, the materials are damaged and the projectile energy is consumed. Con-sequentially, 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 ef?fect of the material toughness but also the intensity in the penetration process. This formula is applicable for the calcula?tion of penetration depth in the steel fiber concrete and provides an important reference for the relevant projects and scien?tific researches.

Key words: explosive mechanics , steel fiber concrete , penetration depth , tenacity , energy absorption factor , regression analysis