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how do (or where do) i get the mathematical derivation or proof of the "Lee and Shaffer's
lower bound solution from rijid,plastic firld approach?
Track down the paper?
E.H. Lee, B.W. Shaffer, The theory of plasticity applied to a problem of machining, ASME Journal of Applied Mechanics 73 (1951) 405–413.
Or ...........
http://www.springerlink.com/content/k7647p6r5154125m/
"...rijid,plastic firld..."
Do you use some kind of scrambler?