On Dynamical Systems at the Portevin-Le Chatelier Effect

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This paper studies Portevin-Le Chatelier (PLC) effect as a form of dynamic material instability. In such phenomenon negative rate dependence is coupled with the appearance of a selfsustained oscillatory behavior in solid bodies. The tools of the investigation are of the theory of dynamical system. By selecting a proper form of the constitutive equation of the rate dependent material, a dynamical system will be constructed from the basic equations of continua. Then the birth of a self-sustained oscillation is detected at the conditions of a dynamic material instability mode. This results show an interpretation of PLC as a flutter type of loss of material stability.

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Periodical:

Key Engineering Materials (Volumes 340-341)

Edited by:

N. Ohno and T. Uehara

Pages:

301-306

Citation:

P. B. Béda "On Dynamical Systems at the Portevin-Le Chatelier Effect", Key Engineering Materials, Vols. 340-341, pp. 301-306, 2007

Online since:

June 2007

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$38.00

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