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论文类型：期刊论文

发表时间：2012-08-01

发表刊物：International Journal of Nanomanufacturing

收录刊物：EI、Scopus

卷号：8

期号：4

页面范围：326-339

ISSN号：17469392

摘要：Conventional finite element methods are not able to deal with large deformation problems because of severe mesh distortion. And the smooth particle hydrodynamics (SPH) method can avoid this drawback, which is of mesh-free fashion and has an inherent advantage over the FEM methods in cutting simulations. In this paper, an SPH model of ultra-precision cutting is conducted using the LS-DYNA software. The orthogonal cutting process of AISI 4340 steel is simulated. It is revealed that cutting process is mainly performed by the rounded tool tip. During the cutting process, one part of the cutting layer is pushed forward to form the chip and the other part of cutting layer is extruded back into the bulk to form a smooth and dense surface. The simulation also gives an insight into changes of the temperature filed and the result implies cutting speed has a most notable effect on cutting temperature. Copyright ? 2012 Inderscience Enterprises Ltd.