三次元連続型切りくず生成過程のシミュレーション解析(第1報) : 有限要素法定式化と一二の結果

概要

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The present study proposes a computer simulation method which can be employed to predict cutting forces, chip formation, cutting temperature and tool wear in a real three-dimensional turning process with a continuous chip. The finite element formulation using a linear tetrahedral element has been implemented. The overconstraint problem emerged from using the element has been solved by extending the Nagtegaal-Rice functional either to a hexahedron which consists of six tetrahedra or to a pentahedron which includes three tetrahedra. The effects of elasticity, plasticity, temperature, strain rate, large strain, friction and tool wear are all included in the formulation. The three-dimensional simulation has predicted the effects of cutting action by the front and side cutting edges upon the cutting mechanism, such as the development of plastic deformation in the finished surface followed by the increase in temperature and severe wear near the edges.
公益社団法人精密工学会の論文
1993-11-05