射弹对钢纤维混凝土侵彻深度的计算  

Calculation of penetration depth of projectile into steel fiber reinforced concrete

作　　者：陈卓[1] 孙惠香[1] 袁英杰 曹洪瑞 牛欢 王英武 CHEN Zhuo;SUN Huixiang;YUAN Yingjie;CAO Hongrui;NIU Huan;WANG Yingwu(Aeronautics Engineering College,Air Force Engineering University,Xi'an 710038,China;Unit 95829,the People's Liberation Army,Xiaogan 432099,China;Xi'an Institute of Optics and Precision Machinery,Chinese Academy of Sciences,Xi'an 710068,China)

机构地区：[1]空军工程大学航空工程学院,陕西西安710038 [2]中国人民解放军95829部队,湖北孝感432099 [3]中国科学院西安光学精密机械研究所,陕西西安710068

出　　处：《武汉大学学报（工学版）》2020年第11期980-985,共6页Engineering Journal of Wuhan University

基　　金：国家自然科学基金项目(编号:51208506)。

摘　　要：钢纤维混凝土由于具有良好的抗震动性能在防护工程建设中大量使用。射弹侵彻时,钢纤维混凝土的韧度能更好反映其良好的吸能特性,但常用的经验公式不能有效反映韧度对侵彻深度的影响。引入韧度指标,运用相似理论和量纲分析法,根据试验数据拟合出钢纤维混凝土侵彻深度预估公式,并利用ANSYS/LS-DYNA有限元数值模拟进行验证。结果表明:射弹速度在273.0~813.5 m/s时,拟合公式吻合程度较高,公式具有一定的参考价值,可以用于不同射弹正侵彻钢纤维混凝土的深度预测。Steel fiber reinforced concrete is widely used in protective engineering construction because of its good anti-vibration performance.When projectile penetrates,the toughness of steel fiber reinforced concrete can better reflect its good energy absorption characteristics,but the commonly used empirical formula fail to effectively reflect the impact of toughness on penetration depth.The toughness index is introduced,and the formulas for predicting the penetration depth of steel fiber reinforced concrete are fitted according to experimental data by using similarity theory and dimensional analysis method.The formulas are verified by ANSYS/LS-DYNA finite element numerical simulation.The results show that when the projectile velocity is273.0-813.5 m/s,the fitting formula has a high degree of coincidence.The formula has a certain reference value and can be used to predict the depth of different projectiles penetrating into steel fiber reinforced concrete vertically.

关 键 词：钢纤维混凝土 韧度 侵彻深度 预估公式 量纲分析 

分 类 号：TU933[建筑科学—结构工程]