Summary
The main difficulties arising in the problems of identification of numerical values for materials coefficients involved in strain or rupture constitutive equations are described with emphasis on highly non linear conditions. Direct identification can be used for simple models but computer assistance is needed when the number of unknown coefficients is greater than 3. Interactive method is described and some details are given on automatic minimization procedure of error functions, particularly on GAUSS-NEWTON method Examples deal with plastic, viscoplastic and damage rupture behaviors.
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© 1981 Springer-Verlag, Berlin, Heidelberg
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Chaboche, J.L., Lemaitre, J., Marquis, D., Savalle, S. (1981). Discussion on Problems of Models Identification. In: Hult, J., Lemaitre, J. (eds) Physical Non-Linearities in Structural Analysis. International Union of Theoretical and Applied Mechanics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-81582-9_7
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DOI: https://doi.org/10.1007/978-3-642-81582-9_7
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