EXPLOSIVE WELDING OF MULTILAYER PACKAGES: NUMERICAL SIMULATION Penza State University I. S. Los, A. Yu. Muizemnek, and E. A. Zhuravlev

Object of investigations Purpose Developing simultaneous explosive welding of multilayer package technology using numerical simulation. Object of investigations Deformation process in interlayer boundaries in the time of simultaneous explosive multilayer package explosive welding.

Multilayer materials production methods Layerwise explosive welding Simultaneous explosive welding of multilayer package Combining of explosive welding and roll welding

Simultaneous multilayer material explosion welding schema

Problems Different collision conditions in different interlayer boundaries Necessity to obtain uniform strength in all joints Necessity to do many experiments

Three-layers material model Explosion welding schema

Model description Material models Stainless steel 18-10, carbon steel MAT_JOHNSON_COOK with EOS_GRUNEISEN equation of state Explosive MAT_HIGH_EXPLOSIVE_BURN with EOS_JWL equation of state Empty space MAT_VACUUM

Mesh description 3D solid, 8 nodes element Element size = 0.01mm

Explosion welding of three-layers material. Numerical simulation.

Resultant velocity

Pressure

Collision angles

Experiment results Microstructure of explosive welded three layers package

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