Effects of damage evolution on simulation results of high speed machining of Ti6Al4V

被引：0
|
作者：
Du M. [1 ]
Cheng Z. [1 ]
Wang S. [1 ]
Zhang Y. [1 ]
机构：
[1] Faculty of Mechanical and Electrical Engineering, Kunming University of Science and Technology, Kunming
来源：
Hangkong Xuebao/Acta Aeronautica et Astronautica Sinica | 2019年 / 40卷 / 07期
基金：
中国国家自然科学基金;
关键词：
Damage evolution; Fracture energy; High speed machining; Serrated degree; Ti6Al4V;
D O I：
10.7527/S1000-6893.2019.22787
中图分类号：
学科分类号：
摘要：
Based on the finite element analysis software ABAQUS, a two-dimensional cutting simulation model for Ti6Al4V is established. In order to investigate the effects of the damage evolution process on the simulation results, the cutting force, cutting temperature, and chip morphology under different damage evolution characteristic parameters (fracture energy) are obtained when the other model parameters (constitutive parameters, initial damage parameters, etc.) are fixed. The research finds that the simulated cutting force and the cutting temperature decrease with the decrease of value of the fracture energy. making the serrated degree of the chip severer. The orthogonal experiments of machining Ti6Al4V are carried out to measure the cutting force at the cutting speed of 180 m/min and feed rate of 0.1 mm/r. By comparing the simulated main cutting force and the serrated degree of the chip with the experimental results, the reasonable value of fracture energy suitable for the established simulation model is determined. The results show that the cutting force and the chip geometry obtained by simulations are in good agreement with the experimental values when the reasonable fracture energy value is used. After eliminating the effects of energy density on the simulation model, four sets of validation experiment are conducted. The simulated results are consistent with the experimental results of the verification experiments, and the accuracy of the fracture energy values is verified. © 2019, Press of Chinese Journal of Aeronautics. All right reserved.
引用
收藏
相关论文
共 32 条
  • [1] Yu C.X., Cai C.B., Huang C., Et al., Recent advances in finite element simulation of machining processes, Journal of System Simulation, 28, 4, pp. 815-825, (2016)
  • [2] Umbrello D., M'Saoubi R., Outeiro J.C., The influence of Johnson-Cook material constants on finite element simulation of machining of AISI 316L steel, International Journal of Machine Tools and Manufacture, 47, 3-4, pp. 462-470, (2007)
  • [3] Liu Z.Q., Zhang K.G., Sensitivity analysis of Johnson-Cook material constants on adiabatic shear, Acta Aeronautica et Astronautica Sinica, 32, 11, pp. 2140-2146, (2011)
  • [4] Schulze V., Zanger F., Numerical analysis of the influence of Johnson-Cook material parameters on the surface integrity of Ti-6Al-4V, Procedia Engineering, 19, pp. 306-311, (2011)
  • [5] Ducobu F., Riviere-Lorphevre E., Filippi E., Material constitutive model and chip separation criterion influence on the modeling of Ti6Al4V machining with experimental validation in strictly orthogonal cutting condition, International Journal of Mechanical Sciences, 107, pp. 136-149, (2016)
  • [6] Wang B., Liu Z.Q., Investigations on the chip formation mechanism and shear localization sensitivity of high-speed machining Ti6Al4V, The International Journal of Advanced Manufacturing Technology, 75, 5-8, pp. 1065-1076, (2014)
  • [7] Wang B., Liu Z.Q., Shear localization sensitivity analysis for Johnson-Cook constitutive parameters on serrated chips in high speed machining of Ti6Al4V, Simulation Modelling Practice and Theory, 55, pp. 63-76, (2015)
  • [8] China aeronautical materials handbook Vol.4: Titanium alloy, copper alloy, pp. 107-126, (2001)
  • [9] Johnson G.R., a Constitutive Model and Data for Materials Subjected to Large Strains, High Strain Rates, and High temperatures, Proceeding of the Seventh International Symposium on Ballistics, pp. 541-547, (1983)
  • [10] Lee W.S., Lin C.F., High-temperature deformation behaviour of Ti6Al4V alloy evaluated by high strain-rate compression tests, Journal of Materials Processing Technology, 75, 1-3, pp. 127-136, (1998)
1234