FEM Analysis of Residual Stress Distribution and Cutting Forces in Orthogonal Cutting with Different Initial Stresses

Yuan Ma; Ding Wen Yu; Ping Fa Feng

doi:10.4028/www.scientific.net/MSF.800-801.380

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HomeMaterials Science ForumMaterials Science Forum Vols. 800-801FEM Analysis of Residual Stress Distribution and...

FEM Analysis of Residual Stress Distribution and Cutting Forces in Orthogonal Cutting with Different Initial Stresses

Abstract:

Machining induced residual stress is influenced by many factors. Extensive studies on the influence of cutting parameters, tool parameters, as well as basic properties of materials have been carried out during the past decades, while another important factor, initial stress distribution in workpiece, was often ignored. In this paper a relatively complete FEM simulation on the formation mechanism of machining induced residual stress in high speed machining is carried out, illustrating the three stress zones affected by mechanical and thermal loads, and their influence on ultimate residual stress. And the influence of initial compressive stress on stress formation and cutting forces is analyzed. Initial compressive stress weakens the tensile effect caused by the shear deformation, and the residual stress tend to be more compressive with larger initial compressive stress. Cutting force becomes larger with the increase of initial compressive stress. And the results in this FEM study can be used to explain some unaccounted experimental phenomena in former researches.

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Periodical:

Materials Science Forum (Volumes 800-801)

Pages:

380-384

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.800-801.380

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Online since:

July 2014

Authors:

Yuan Ma, Ding Wen Yu, Ping Fa Feng*

Keywords:

Finite Element Method (FEM), Initial Stress, Orthogonal Cutting, Residual Stress

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* - Corresponding Author

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