Numerical simulation of multi layer explosive welding of Q235 steel and 304 stainless steel

DOI:	10.11809/bqzbgcxb2023.01.033
Keywords:	SPH FEM coupling method; numerical simulation; multi layer explosive welding; dynamic parameters
Abstract:	This paper uses SPH FEM coupling algorithm and SPH algorithm respectively to carry out three dimensional and two dimensional numerical simulations of multi layer explosive welding experiments of Q235 steel/304 stainless steel to study the dynamic parameter distribution and bonding quality in the process of multi layer explosive welding. The peak collision pressure of the composite plate in the three dimensional simulation is calculated and compared with the simulation results. On this basis, the pressure distribution characteristics of the composite plate are explained by using the propagation law of vibration and detonation waves. Through two dimensional simulation, the wavy bonding interface of the base and composite plates is obtained, which is in good agreement with the experimental waveform, and verifies the bonding quality of the base and composite plates in the multi layer explosive welding experiment. The simulation results show that, compared with single layer explosive welding, multi layer explosive welding can theoretically save nearly 68% of the amount of explosives, which effectively saves the production cost.
Published:	2023-01-28
PDF HTML