Numerical Simulation Research Method Based on Molecular Dynamics Abrasive Flow Machining

Abstract

The present invention relates to a numerical simulation research method of abrasive flow processing based on molecular dynamics. A single abrasive particle is used as a tool to carry out numerical simulation research on the processing process. The specific steps are as follows: (1) Carry out abrasive flow processing based on molecular dynamics Simulation research; (2) Establish a molecular dynamics model of abrasive micro-cutting; (3) Discuss the influence of relevant parameters on energy changes in the machining process, and analyze the quality of the machined surface; (4) Explore abrasive flow machining from the microscopic scale Influence on the crystal structure of abrasive grains. The inventive method uses the molecular dynamics method to study and analyze the micro-cutting process of a single abrasive particle in the process of abrasive flow machining, and realizes the calibration of the atomic displacement of the Newtonian layer of the workpiece in the process of abrasive particle micro-cutting; realizes the molecular dynamics simulation of abrasive particles , pointing out that the bond angle of the abrasive grain crystal will change during the processing of the abrasive grain, which lays a theoretical foundation for the subsequent research on the deformation of the abrasive grain crystal structure during the abrasive flow machining process.

Description

technical field [0001] The invention relates to a numerical simulation research method based on molecular dynamics abrasive flow processing, which belongs to the technical field of mechanical processing. Background technique [0002] With the development of science and technology, mechanical processing is moving towards the field of micro and ultra-precision processing technology. The gap between friction pairs in many high-end products has become smaller and smaller, beginning to enter the nanometer level, and micro-tribology has become another important theory in mechanical engineering applications. [0003] Abrasive flow machining can achieve smoothing of the inner wall of special channels and improve the surface finish of the workpiece. Therefore, abrasive flow machining can solve the precision machining of complex shape parts that cannot be achieved by other traditional processing methods, making it play an important role in the field of precision machining. important ...

AI Technical Summary

Problems solved by technology

However, in the research on the abrasive cutting process, it is generally difficult to reflect the dynamic change process by using simple formulas to calculate the wear amount or to observe and analyze the workpiece surface through experiments.