Study On The Application Of Three-dimensional Printing Technique To The Surface Preparation Of Shark Skin

Three-dimensional printing technology is also called rapid prototyping technology,from nineteenth Century to today,has gradually been used in product design and manufacturing industry,and completely changed the process,to subvert the traditional manufacturing depending on the mold or other mechanical processing equipment,using the principle of "additive manufacturing",the combination of CAD technology and material processing technology,rapid completion of the preparation of complex parts.FDM(Fused Deposition Modeling)is the most basic and representative technology in3 D printing technology.It is most popular at present.It can accurately and efficiently build complex 3D models into a solid prototype with a certain intensity.Therefore,based on the FDM rapid prototyping technology,green polymer industrial grade thermoplastic PLA,which has better strength and wear resistance,is used as printing consumables to print a model of shark skin shield scale with a certain accuracy.This topic starts with the establishment of shark skin shield scale structure model.Based on the existing parameters,combined with GetData,Matlab and other tools software,we get the detailed model data,and establish the approximate shark skin shield scale structure model through SoildWorks 3D software.The effect of Fluent fluid module in Ansys on the drag reduction of shark skin under different proportional parameters was used.Secondly,the mechanical structure,technological characteristics,preparation process,molding material and wire feeding process of FDM printer are analyzed theoretically,and the forming parameters,molding accuracy and process parameters of FDM printer are analyzed.Three orthogonal experiments,including storey height,printing speed and extrusion width,were carried out to compare and analyze the printing quality of molded parts under different parameters.