钢筋混凝土靶侵彻的可压缩弹-塑性动态空腔膨胀阻力模型

In the present paper, based on the compressible elastic-plastic response penetration model of plain concrete proposed by Forrestal, a dynamic spherical cavity-expansion penetration model for reinforced concrete targets is constructed with considering the hoop confinement effect derived from reinforcing bars in the crushed region. The theoretical solution of radial stress for the compressible reinforced concrete is achieved through introducing the reinforcement ratio, i.e., the volume fraction of rebars in the concrete target. The effects of reinforcement ratio on radial stress and size of response regions are discussed. The results show that the hoop confinement effect derived from reinforcing bars changes the size of each region and improves the radial stress at cavity surface.