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A method for the evaluation of a ratchet limit and the amplitude of plastic strain for bodies subjected to cyclic loading

By H. F. Chen and A. R. S. Ponter

Abstract

An extension of the upper bound shakedown theorem to load histories in excess of shakedown has been presented elsewhere in this issue. Here the minimisation process described therein is applied to the solutions of the ratchet limit as well as shakedown and limit load for a range of simple problems. The solutions provide an estimate of the maxima of the varying plastic strain magnitudes, which is compared with the Neuber approximate values. The position of the ratchet boundary is confirmed by comparison step-by-step analysis

Year: 2001
DOI identifier: 10.1016/S0997-7538(01)01162-7
OAI identifier: oai:lra.le.ac.uk:2381/1969
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