Study on Stress State of Low-Frequency Vibration Cutting Process Based on Finite Element Simulation

Abstract:

Proposed a concept, “cutting degree” as one of the parameters indicating the surface characteristics of the machined layer integrity. According to material nonlinearity, geometric nonlinearity, thermal coupling theory, established models of the vibratory cutting simulation, constitutive J-C model, shear model, boundary conditions, made finite element simulation of low-frequency vibration cutting by using software. Accessing to a visualization process, which is the change of material stress state in local area of the workpiece in cutting process. Analyzed the change of material stress states in local area of the workpiece, between low-frequency vibration cutting and non-vibration cutting machining process, other cutting parameters being equal. It is found that the values of cutting degree were apparently different in vibration cutting from those in non-vibration cutting. Contrasting experiments were done and SEM was observed of the machined surfaces. Findings of the experiment supported the simulation and to some extent validated the feasibility of the vision of 'cutting degree' as a term for expression of vibration cutting feature.

• Periodical: Applied Mechanics and Materials (Volume 551)
• Pages: 176-181
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.551.176
• Online since: May 2014
• Authors: Li Zhi Gu*, Wei Wen Du, Jian Tao Wang, Shao Kui Qu, Yan Hua Huang
• Keywords: Cutting Degree, Local Stress, Surface Quality, Vibration Cutting

References

[1] LZ Gu. The Stress Wave Propagation and Crack Format ion in Vibratory Metal Cutting Process [J]. Key Engineering Material, 2004, 259: 456 - 461.

DOI: 10.4028/www.scientific.net/kem.259-260.456

[2] Fuqiang Tong, Yong Zhang, Feihu Zhang, Lizhi Gu, etc. Vibration Cutting stress wave on crack and chip formation mechanism of impact study [J]. Vibration and Shock, 2008, 27 (6): 136- 139. In Chinese.

[3] Ai-jun CHEN. Analysis of dynamic stress intensity factors of three-point bend specimen containing crack [J]. Applied Mathematics and Mechanics ( English Edition ) , 2011, 32 ( 2 ).

DOI: 10.1007/s10483-011-1406-7

[4] Xiao hua Zhao. The Stress-intensity Factor for a Half Plane Crack in a Transversely Isotropic Solid Due to Impact Point Loading on the Crack Faces [J]. International Journal of Solids and Structures, 2001, 38: 2851 - 2865.

DOI: 10.1016/s0020-7683(00)00187-6

[5] Jianli Shao, Pei Wang, Anmin He. Triangular wave loading aluminum under dynamic failure Microscopic simulation [J]. Acta Physical Sinical, 2013, (7) In Chinese.

[6] R. N Ibrahim, R. Rihan, RK Singh Raman. Validity of a new fracture mechanics technique for the determination of the threshold stress intensity factor for stress corrosion cracking (K_ (Iscc) and crack growth rate of engineering materials [J]. Engineering Fracture Mechanics, 2008, 75 (6).

DOI: 10.1016/j.engfracmech.2007.06.007

[7] Mengyang Tan, Bangyan Ye, Aidong He. Based on coupled thermal residual stress analysis of prestressed cutting research [J]. South China University of Technology (Natural Science Edition), 2012, 40 (1) In Chinese.

[8] J. Shi, Liu, C.R. The influence of material models on finite element simulation of machining [J]. Journal of manufacturing science and engineering, 2004, 126-849.

DOI: 10.1115/1.1813473

[9] G. R Johnson, Cook, W.H. A constitutive model and data for metals subjected to large strains, high strain rates and high temperatures [C]. City: The Hague, Netherlands: International Ballistics Committee, Year: 541-547.

[10] T. zel, Zeren, E. Finite element modeling of stresses induced by high speed machining with round edge cutting tools [C] . (2005).

DOI: 10.1115/imece2005-81046

[11] Shihong Zhang, Jinsong Liu. MSC. MARC in Materials Processing Engineering Applications [M]. China Water Power Press, 2010. In Chinese.

[12] Zc Lin, Lin, Sy. A coupled finite element model of thermo-elastic-plastic large deformation for orthogonal cutting [J]. Journal of engineering materials and technology, 1992, (114) 218.

DOI: 10.1115/1.2904165

[13] J. Hashemi, Tseng, Aa, Chou, Pc. Finite element modeling of segmental chip formation in high-speed orthogonal cutting [J]. Journal of materials engineering and performance, 1994, 3 (6): 712-721.

DOI: 10.1007/bf02818370

[14] Av Mitrofanov, Babitsky, Vi, Silberschmidt, Vv. Finite element simulations of ultrasonically assisted turning [J]. Computational materials science, 2003, 28 (3) : 645-653.

DOI: 10.1016/j.commatsci.2003.08.020

[15] Zhitao Tang, Zhanqiang Liu, Xing Ai, Xiuli Fu. Thermal metal cutting plastic large deformation finite element theory and key technology research [J]. China Mechanical Engineering, 2007, 18 (006): 746 -751. In Chinese.

[16] J. Yan, Zhao, H., Kuriyagawa, T. Effects of tool edge radius on ductile machining of silicon: an investigation by FEM [J]. Semiconductor Science and Technology, 2009, 24 (075): 018.

DOI: 10.1088/0268-1242/24/7/075018

[17] Guiying Sha etc. Downline elastic stress wave load dynamic fracture process analysis method [J]. Explosion and Shock 2002 (1): 56 -60. In Chinese.

[18] Weibucun Yilang, Precision Machining Vibration Cutting (Fundamentals and Applications) [M]. Beijing: Mechanical Industry Press, 1985. In Chinese.