The Von-Mises stress distribution and equivalent plastic strain (PEEQ) during cutting are then investigated. Finally, the evolution of cutting forces in cutting was examined. The presented Finite element model in this study proved to be useful in determination of cutting parameters, especially in high-speed machining. | Journal of Science and Technology 54 (5A) (2016) 174-184 SIMULATION STUDIES ON CHIP FORMATION PROCESS IN HIGH SPEED MILLING OF ALUMINIUM ALLOY Pham Thi Hoa1, 2, *, Mac Thi Bich1, 2, Banh Tien Long1, Nguyen Duc Toan1 1 2 Department of Mechanical Engineering, Hung Yen University of Technology and Education, Dan Tien Ward, Khoai Chau District, Hung Yen Province, Vietnam School of Mechanical Engineering, Hanoi University of Science and Technology, Number 1°, Dai Co Viet Street, Hai Ba Trung District, Hanoi City, Vietnam * Email: hoapt2108@ Received: 20 July 2016; Accepted for publication: 3 December 2016 ABSTRACT Simulations of chip formulation mechanism and phenomenon ٛ ccurred in cutting processes can help to reduce time and cost comparing with experiment. Finite element method (FEM) is an effective and accurate technique, which can be used for simulation of cutting process. In this paper, chip formulation process in high-speed milling of A6061 aluminium alloy is investigated using FEM based on the Johnson-Cook (J-C) and Bao-Wierzbicki (B-W) fracture models. The Von-Mises stress distribution and equivalent plastic strain (PEEQ) during cutting are then investigated. Finally, the evolution of cutting forces in cutting was examined. The presented Finite element model in this study proved to be useful in determination of cutting parameters, especially in high-speed machining. Keywords: high-speed milling, A6061 aluminum alloy, simulation using finite element. 1. INTRODUCTION Nowadays, high-speed machining has recieved a great deal of attention in morden industrial to achieve high quality and productivity in manufacturing. The chip formation mechanism in high-speed machining is one of the most important factors influencing the surface finish of machining product and other cutting parameters such as cutting force, temperature, vibration, wear and life of cutting tool. There have been a numerous studies conducted using different cutting methods and workpiece
