Finite element simulation of materials's stress and strain in micro-milling

Y. Z. Sun; H. T. Liu; Y. C. Liang; Z. Zhang

doi:10.1117/12.891874

8 July 2011 Finite element simulation of materials's stress and strain in micro-milling

Y. Z. Sun, H. T. Liu, Y. C. Liang, Z. Zhang

Proceedings Volume 7997, Fourth International Seminar on Modern Cutting and Measurement Engineering; 79973S (2011) https://doi.org/10.1117/12.891874
Event: Fourth International Seminar on Modern Cutting and Measuring Engineering, 2010, Beijing, China

Abstract

The material of alloy steel 40CrNiMoA's micro-milling process was simulated using the finite element method, with is built up with the Johnson-Cook coupled thermo-mechanical model , shear failure principle and Modified Coulomb friction law.. The distributions of the Mises stress, logarithmic strain, equivalent plastic strain and strain rate were obtained through finite element analysis. Meanwhile, the material's stress-strain curves of cutting deformation zones, formed surfaces, cutting chips and nearby cutting edge were given. These curves are very different from those stress-strain curves when the material is only stretched. There is no partial deformation stage on the curves of the first deformation zone, and there exists fierce indented fluctuation on the curves of deformation zone and the chip partial deformation stage. There are still exist some stress and strain no matter cutting chips or formed surfaces have reached stable.

Citation Download Citation

Y. Z. Sun, H. T. Liu, Y. C. Liang, and Z. Zhang "Finite element simulation of materials's stress and strain in micro-milling", Proc. SPIE 7997, Fourth International Seminar on Modern Cutting and Measurement Engineering, 79973S (8 July 2011); https://doi.org/10.1117/12.891874

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