Multi-physical Modeling and Adjusting for Ultrasonic Assisted Soft Abrasive Flow Processing  

作　　者：Yesha Ni Yunfeng Tan Dapeng Tan 

机构地区：[1]Key Lab of E&M,Ministry of Education and Zhejiang Province,Zhejiang University of Technology,Hangzhou 310014,China [2]Collaborative Innovation Center of High-end Laser Manufacturing Equipment,Zhejiang Province&Ministry of Education,Hangzhou 310014,China

出　　处：《Chinese Journal of Mechanical Engineering》2023年第4期111-124,共14页中国机械工程学报（英文版）

基　　金：Supported by National Natural Science Foundation of China(Grant No.52175124);Zhejiang Provincial Natural Science Foundation(Grant No.LZ21E050003);Fundamental Research Funds for the Zhejiang Universities(Grant No.RF-C2020004).

摘　　要：The polishing efficiency of the soft abrasive flow(SAF)method is low,which is not in line with the concept of carbon emission reduction in industrial production.To address the above issue,a two-phase fluid multi-physics modeling method for ultrasonic-assisted SAF processing is proposed.The acoustics-fluid coupling mechanic model based on the realizable k-ε model and Helmholtz equation is built to analyze the cavitation effect.The results show that the pro-posed modeling and solution method oriented to ultrasonic-assisted SAF processing have better revealed the flow field evolution mechanism.The turbulence kinetic energy at different ultrasonic frequencies and amplitudes is stud-ied.Simulation results show that the ultrasonic vibration can induce a cavitation effect in the constrained flow chan-nel and promote the turbulence intensity and uniformity of the abrasive flow.A set of comparative polishing experiments with or without ultrasonic vibration are conducted to explore the performance of the proposed method.It can be found that the ultrasonic-assisted SAF method can improve the machining efficiency and uniformity,to achieve the purpose of carbon emission reduction.The relevant result can offer a helpful reference for the SAF method.

关 键 词：Soft abrasive flow Ultrasonic vibration Cavitation effect Polishing efficiency Turbulent kinetic energy 

分 类 号：TB559[理学—物理]