Abstract
During the last twenty years large interest has been given to internal variable formulations [1]–[5], which are often utilised for the description of nonlinear effects. Such formulations are quite popular in the field of Structural Engineering and are frequently found when plastic strains, damage processes and viscosity are considered. Their importance is mainly due to the possibility of developing a unified theoretical framework for the description of constitutive equations. In addition, they often allow one to focus on the fundamental features of constitutive laws in a simple way.
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Nappi, A. (1997). An Internal Variable Approach Applied to Boundary Element Nonlinear Structural Analysis. In: Morino, L., Wendland, W.L. (eds) IABEM Symposium on Boundary Integral Methods for Nonlinear Problems. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-5706-3_27
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DOI: https://doi.org/10.1007/978-94-011-5706-3_27
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