Research On The Antiknock Composite Material And Structure Of Ground Defense Engineering

This article selects the frontier subject need to be addressed within the currentdefense engineering field-the ground defense engineering antiknock technologyresearch as a thesis topic selection and researches new defense materials and thecombination of hard and soft composite defense structure to improve the groundresistance defense engineering itself.(1) Study of dynamic compressive strength of doped silicon powder and fly ashconcrete. The common C50concrete is mixed with silicon powder and fly ash toimprove the strength of concrete. Through the SHPB dynamic impact test, the doublemixing concrete was found that the dynamic compressive strength from120MPa to180MPa, the structural resistance is improved significantly.(2) Research on mechanical properties and energy absorption performance ofpolyurethane foam aluminum composite material. Polyurethane foam aluminumcomposite material is used to be energy absorption layer. Based on the static anddynamic mechanical properties of polyurethane foam aluminium structure research,conclusions is drawn: polyurethane foam aluminum energy absorption efficiency canreach0.7, which is a kind of good energy absorption material.(3) Research on polyurethane composite mechanical properties and energyabsorption properties of honeycomb paperboard. In the static compression phasehoneycomb paperboard filled with polyurethane materials has some instability phasedisappeared, thus improve the elastic limit level of the honeycomb cardboardcomposite. The study found that the energy absorption efficiency E and ideal energyabsorption efficiency I of Polyurethane honeycomb paperboard is above0.6, whichshows it is a good energy absorption material.(4) Based on the research of kinds of materials and previous research results,three kinds of material dynamic constitutive model are established. The LS-DYNAfinite element program is used for antiknock energy absorption and optimizationanalysis of composite structure of SAFFC-polyurethane foam aluminum compositestructure and three kinds of steel doors filled with SAFFC, polyurethane foamaluminum and polyurethane honeycomb board.