The Overall Design Of The 3D Printing Experimental System Of Energetic Materials And The Impact Analysis Of Process Parameters

In this paper,taking the energetic materials 3D printing technology as the research background,a solvent plasticize energetic materials 3D printing experimental system is designed and built up.Based on the experimental study,the paper is mainly focus on the influence of process parameters on the prototyping precision.The main research contents and conclusions of this paper are as the followings:(1)According to the characteristics of the solvent plasticize energetic materials,the 3D printing experimental system is designed and built up successfully referring to the fused deposition molding(FDIM)technology.The built experimental system provides a basic platform for the next experimental research;(2)Apply the birth and death element technology and ANSYS Parametric Design Language(APDL),the temperature field of the nozzle and the prototyping process is simulated by finite element method according to the basic theory of heat transfer and thermodynamics.It is found that the overall temperature distributions are in the range of safety temperature for the prototyping materials both at the nozzle and the prototyping process;(3)According to orthogonal experiment method,the effects of extrusion speed,filling speed,layer thickness and filling mode on the sample's dimensional accuracy and density are analyzed.The influence degree of the process parameters on the single optimization objective was obtained by the range analysis of the experimental results;(4)Multi-objective optimization analysis is carried out on the experiment results of with the application of the entropy-weight Technique for Order Preference by Similarity to an Ideal Solution(TOPSIS)model,and the optimal combination of process parameters is obtained.Through the verification experiment,it was found that the optimization scheme is improved by 2.72%on comprehensive index,and the application of entropy-weight TOPSIS model in the optimization of energetic materials 3D printing process is feasible;(5)According to the optimal combination of process parameters,the prototyping of strip,straight cylindrical and star grain are completed on the 3D printing experimental system.The work in the paper verified the feasibility of 3D printing with energetic materials.