HSFRC靶体的弹体侵彻试验与理论分析

Experiments and Theoretical Analyses on HSFRC Target Under the Impact of Rigid Projectile

为了研究高强纤维增强混凝土(HSFRC)材料的抗侵彻性能,采用2种不同弹头形状的刚性动能侵彻弹,对高强钢纤维增强混凝土和高强聚丙烯纤维增强混凝土靶体进行了侵彻试验和理论分析.给出了考虑弹靶摩擦阻力和弹头形状变化的混凝土靶体侵彻深度计算公式和侵彻试验数据,基于此,拟合得到了高强混凝土靶体经验强度参数的计算表达式并进行了试验验证,弥补了经典FORRESTAL公式中强度参数适用范围低于100MPa的不足.通过对比公式计算结果和试验数据,验证了文中提出的公式和分析方法对于弹体侵彻高强纤维增强混凝土靶体深度的计算较FORRESTAL公式有更广的应用范围和更高的预测精度.

To study the anti-penetration performances of the high-strength fiber reinforced concrete（HSFRC）, the field penetration tests and theoretical analyses on high-strength steel-fiber reinforced concrete （HSSFRC） and high-strength polypropylene-fiber reinforced concrete （HSPFRC） targets hit by two different nosed kinetic-energy penetrators were carried out, respectively. Considering the friction drag between projectile and target and the shape variation of warhead, the calculating formula of penetration depth of concrete target and penetration test-data were presented. The expressions of high strength concrete target strength-parameter were obtained and validated by the penetration tests, which broadened the application range of classic FORRESTAL formula（less than 100 MPa）. Compared with the calculation results and tests data, the proposed formula and approaches for the prediction of depth of penetration（DOP） of HSFRC target have wider application range and higher prediction accuracy than FORRESTAL formula.