Research on Milling Technology of 3D Braided Composites Based on Abrasive Water Jet

doi:10.3901/JME.2021.05.273

Abstract

Abstract: For abrasive water jet on the erosion process of 3d braided composites, Hypermesh/Ls-Dyna finite element analysis software is used to establish abrasive water jet erosion model of composites with jet pressure, feeding speed, the transverse feed as the variable to carry out the simulation analysis. The removal depth, milling surface quality and stress variation of the material under different process parameters are obtained, and the process simulation of waterjet milling 3D braided composites is completed. It was found that with the increase of jet pressure, the average milling depth and z-direction maximum stress of the composite material increased continuously. When the jet pressure exceeded 70 MPa, the material was broken down. With the increase of cutting speed and transverse feed, the average milling depth and the maximum stress in material Z direction are decreasing. The depth of material milling is mainly affected by the jet pressure, followed by the cutting speed, and the transverse feed has little influence on the depth.The milling surface quality is mainly affected by the transverse feed quantity. When the transverse feed quantity is greater than or less than the nozzle diameter, the milling surface quality will appear peak and valley phenomenon, while when it is equal to the nozzle diameter, the milling surface quality is better. Experimental research is carried out according to the simulation results, and the experimental results are compared with the simulation results to verify the feasibility and effectiveness of the simulation model.

Key words: abrasive water jet milling, 3D braided composite, Hypermesh/Ls-Dyna, numerical simulation

CLC Number:

TG162

YIN Dongyang, CHEN Xiaochuan, BAO Jinsong. Research on Milling Technology of 3D Braided Composites Based on Abrasive Water Jet[J]. Journal of Mechanical Engineering, 2021, 57(5): 273-280.

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