Numerical Study of Residual Stresses Induced by High Speed Milling Hardened SKD11 Steel

Abstract:

A thermo-mechanical numerical model for high speed milling hardened SKD11steel is developed to study the influences of mechanical load and thermal load on residual stresses for each feed. The residual stresses are predicted, which are induced by high speed milling hardened SKD11 steel. Based on a simplified two-dimension assumption, the continuous feed numerical model of high speed milling hardened SKD11 steel is developed. A modified Johnson–Cook (J-C) model considering the effect of phase transformation on flow stress is employed to model residual stresses. The results show that residual stresses dominate over the mechanical load and its impact becomes more and more significant for the posterior cut. The tensile surface residual stresses of posterior cut becomes larger than the previous cut but the work hardening thickness of posterior cut becomes thinner in the condition of this study.

• Periodical: Applied Mechanics and Materials (Volumes 713-715)
• Pages: 2769-2774
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.713-715.2769
• Online since: January 2015
• Authors: Y.C. Liu*, De Weng Tang, S.L. Zou, Z.F. He, Yu Peng Xie
• Keywords: Continuous Feed, High Milling Speed, Residual Stress, skd11

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