Study on numerical simulation of TA1-304 stainless steel explosive welding

In order to guide the explosive welding experiment of titanium-stainless steel, Three-dimensional numerical simulation of explosive welding, which select TA1 as flyer plate and 304 stainless steel as base plate, is carried out by using the LS-DYNA software and SPH-FEM coupling algorithm in the present study. The explosive welding window is calculated and established. It is found that the numerical simulation results are in good agreement with the experimental results. The displacement, velocity and pressure-time curves of characteristic elements show that the quality of explosive welding composites is superior. It is proved that SPH-FEM coupling algorithm is effective for explosive welding of TA1 / 304 stainless steel and can effectively guide the selection of explosive welding parameters.