METHOD OF PRODUCING CELLULAR ENERGY ABSORBER BY LAYER-BY-LAYER DEPOSITION OF MATERIALS Russian patent published in 2024 - IPC B29C64/118 B33Y40/20 B33Y10/00 

FIELD: various technological processes.

SUBSTANCE: invention relates to a method of producing thin-walled cellular energy absorbers with special properties, which can be used in space engineering to limit overloads during collisions. Created by computer simulation methods, 3D model of cellular energy absorber with given geometrical parameters is divided into layers with given thickness, after which metal-filled thermoplastic composite thread is fed into extruder, and extruded material with temperature of not more than 500 °C is applied layer by layer on working table via extruder nozzle. Required geometry of the created article is provided by moving the extruder in three directions, which correspond to the axes in the Cartesian coordinate system, providing full compliance with the geometry of the finished article to initial 3D model, then the finished product is subjected to thermal treatment to remove polymer binder, then the product is sintered to obtain final operating characteristics.

EFFECT: method enables to obtain cellular energy absorbers of virtually any geometry, which enables to produce energy absorbers with very high isotropy of physical and mechanical properties or, on the contrary, to produce an energy absorber with gradient geometry and gradient of physical and mechanical properties.

1 cl, 1 dwg