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Fracture-mechanical Modeling of Tool Wear by Finite Element Analysis  

Sur, Uk-Hwan (School of Mechanical & Automotive Engineering, Halla University)
Lee, Yeong-Seop (Graduate School of Kangwon National University)
Publication Information
Journal of the Korean Society of Safety / v.19, no.4, 2004 , pp. 135-140 More about this Journal
Abstract
Wear mechanisms may be briefly classified by mechanical, chemical and thermal wear. A plane strain finite element method is used with a new material stress and temperature fields to simulate orthogonal machining with continuous chip formation. Deformation of the workpiece material is healed as elastic-viscoplastic with isotropic strain hardening and the numerical solution accounts for coupling between plastic deformation and the temperature field, including treatment of temperature-dependent material properties. Effect of the uncertainty in the constitutive model on the distributions of strait stress and temperature around the shear zone are presented, and the model is validated by comparing average values of the predicted stress, strain, and temperature at the shear zone with experimental results.
Keywords
finite element modeling; machining simulations; orthogonal machining; thermo-mechanical modeling;
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  • Reference
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