Impact Damage And Numerical Simulation Of Reactive Powder Concrete

Reactive powder concrete (RPC) is a high strength, high toughness and highdurability materials, which is prepared by using ultra-fine mineral admixtures,ultra-fine mineral admixtures and superfine steel fiber. It can meet protection worksneeds. The research about RPC compression performance can be able to providetheoretical basis and performance parameters to protection engineering which use thismaterial. The studies have important significance. Protection engineering needs towithstand impact load, such as impact or explosion shock etc. It is very important tostudy the performance of this material’s impact compression. For this purpose, thesplit Hopkinson pressure bar (SHPB) be used to impact test of RPC.The main research work is as follows:Prepared RPC by mixing fly ash, silica fume and steel fiber that volume fractionwas0-5%. Analyze the impact on the PRC’s compressive strength of variouscomponents. Study compressive strength test of the PRC which was incorporated steelfiber by using split Hopkinson pressure bar (SHPB). According to experimental dataand related theoretical analysis, it analyzes the shock resistance impact on PRC fromsteel fiber.It used ANSYS/LS-DYNA finite element analysis software to the RPC underSHPB device for numerical simulation. Through comparison of the experimental andnumerical simulation results, it found that they have better similarity.It studied concrete’s damage evolution on the basis of several concrete’s dynamicstructure models. By improving ZWT model, it established RPC damage constitutiveequations.It provided dynamic performance parameters of RPC materials studies. And ithad certain reference value for choosing materials for the protection engineering.