钢丝网增强活性粉末混凝土抗侵彻特性

为研究新型钢丝网活性粉末混凝土RPC(reactive powder concrete)避弹层的抗侵彻性能,进行了抗侵彻试验和数值计算分析.制作了钢丝网RPC、钢纤维RPC试验靶体.分别采用步枪子弹和57 mm半穿甲弹进行了冲击试验,冲击试验的弹体速度分别为710、340 m/s,主要比较靶体的破坏形态和弹体对靶体的侵彻深度.为利用ANSYS/LS-DYNA动力有限元分析软件对上述靶体的抗侵彻性能进行数值计算分析,创建了新型钢丝网RPC的计算模型.计算结果与试验结果基本吻合,证明了计算模型的合理性.试验和计算结果均表明:钢丝网RPC具有较好的抗局部破坏和抗裂的性能,且具有较高的效费比.

Anti-penetration performance of reactive powder concrete reinforced with steel-wire-net

To research the anti-penet ration perfo rmance of the shed st ructur e made o f a new RPC( r eact ive pow der concrete) r einfor ced w ith SWN ( steel-w ir e-net ) , the ant i-penet rat ion ex periment s and the corresponding numerical simulat io n w ere conducted. T he samples made of RPC reinfo rced w ith SWN and steel fiber w ere desig ned respectiv ely . T he 7. 62 mm-caliber rifle bullet and the 57 mm-caliber semi armourpiercing project ile w er e used in the ant i-penet rat io n test s. The v elo cit ies o f the bullet s and the project iles are 710 m/ s and 340 m/ s respect ively. The damag ed models of the targ et s and the depth of penetr at ion of the project iles were compared in detail. T he finite element model of the new ty pe RPC r einfo rced w ith SWN w as built to perform the numerical simulat ion of ant i-penet ratio n perfo rmance of the material s mentio ned above using A NSYS/ LS-DYNA. T he result s o f numer ical simulat io n accord w ell w ith the ex perimental r esult s, and the feasibility of the analy sis model is prov ed. T he result s of test s and numer ical simulatio n show that the RPC reinfo rced w ith SWN has a bet ter per formance of ant i-crack and a relat ive high rat io o f cost effect iveness.