Numerical Simulation Study on Explosive Welding of SUS304/Q345R Based on Different Algorithms
TIAN Guangkuo
MIAO Guanghong
WEI Zhengmei
WU Weida
SUN Weibo
ZHOU Dapeng
Abstract：To investigate the effect of explosive layer thickness on explosive welding of SUS304 stainless steel/Q345R carbon steel,numerical simulations of the welding process under different explosive layer thicknesses(20,25,35,and 55 mm)were performed using ANSYS/LS-DYNA,combined with two algorithms:the ALE method and SPH-FEM coupling method.An explosive welding window was established via calculations,with comparative analyses of collision velocity,displacement,and collision angle of the test models.Results show that for 25,35,and 55 mm explosive layers,the simulated collision velocities and angles from both algorithms lie within the calculated welding window,and the vertical displacement of the flyer plate reaches the preset 1.4 cm gap.For the 20 mm layer,however,parameters fall outside the window,resulting in poor welding quality.Simulation results are in good agreement with experiments,verifying the accuracy of both algorithms.Additionally,comparing simulation results with theoretical calculations indicates that both methods exhibit small deviations from theoretical values,confirming the validity of the selected theoretical formulas.Notably,the SPH-FEM coupling method shows smaller errors in flyer plate collision velocity and angle than the ALE method,and better characterizes the flyer plate's motion behavior.
Keywords：explosive layer thicknessexplosive weldingALE algorithmSPH-FEM coupling algorithm
Publication Date：2025-11-20
Online Publishing Date：2025-12-03(First online date of this platform, not the publication date of the document)
Pages：8( 51-58 )