Is it possible to obtain an average coefficient of friction greater than unity in metal cutting?...

Is it possible to obtain an average coefficient of friction greater than unity in metal cutting? What about orthagonal metal cutting?

Expert Solution

Ans:

Yes, it is possible to obtain an average coefficient of friction greater than unity in metal cutting. Beacuse friction factor is a ratio between maximum shear stress in sticking region and shear flow stress of the target material.

In metal cutting; if the shear stress goes upper than flow stress; I think the interaction of tool and workpiece will go from sticking to something else.

But in Orthogonal metal cutting , the controlled contact tool is simulated using a limit analysis theorem. The basic principles are stated in the form of a primal optimization problem with an objective function subjected to constraints of the equilibrium equation, its static boundary conditions and a constitutive inequality.

samet mamat answered 2 years ago

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