Numerical simulation of ball-end milling with SPH method

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• 作者：Seyedbehzad Ghafarizadeh…
• 关键词：Finite element method (FEM) ; Smoothed particle hydrodynamics (SPH) ; Cutting forces ; Ball ; end milling ; Friction coefficient
• 刊名：The International Journal of Advanced Manufacturing Technology
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：88
• 期：1-4
• 页码：401-408
• 全文大小：
• 刊物类别：Engineering
• 刊物主题：Industrial and Production Engineering; Media Management; Mechanical Engineering; Computer-Aided Engineering (CAD, CAE) and Design;
• 出版者：Springer London
• ISSN：1433-3015
• 卷排序：88

文摘

Smoothed Particle Hydrodynamics (SPH) is a meshless technique used for simulating large deformation processes. Due to its particle nature, SPH is capable of modeling metal cutting processes without any need of remeshing methods. This paper presents a hybrid SPH-Lagrangian model to study cutting forces in ball-end milling process. One flute cutting edge is modeled for 12° of tool rotation to reduce the computation time. The effects of SPH particle spacing and friction coefficient between tool and workpiece on the predicted cutting force are investigated. Then, cutting action is modeled in different tool rotation angles (30, 60, 90, 120, 150, and 180°) to predict the cutting forces in full rotation of the tool. Comparisons of the simulation result and experimentally measured cutting forces showed that the proposed hybrid SPH-Lagrangian model successfully predicts the cutting forces in feed and normal direction. However, model was not able to predict the experimental force trend in axial direction.