Degree Of Blunting Research Articles

FRICTIONAL VIBRATIONS IN METAL CUTTING

Abstract In the metal-cutting process, oscillations of the tool may be caused by stick-slip friction which occurs as the chip slides past the tool. The frequency of these oscillations has been measured for a range of cutting variables, including the degree of bluntness of the tool, the approach angle, and the amount of tool overhang. This paper includes a discussion of the relationship between frictional vibrations occurring in the cutting operation and those resulting from the sliding of a mass over a rough surface.

The use of moving meshes in gas-dynamical computations

A finite-difference method for nonstationary onedimensional problems of gas dynamics was described in [ll, then later extended in [2] to two-dimensional problems, where the example of computing the flow past a sphere with an outgoing shock wave was considered. The method, developed by the present authors, has also been used elsewhere, notably in [3], for computing rotationally symmetric flows with high Mach numbers, involving bell-shaped bodies with varying degrees of bluntness.