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Erschienen in:
1987 | OriginalPaper | Buchkapitel
State Variable Theories Based on Hart’s Formulation
verfasst von : M. A. Korhonen, S.-P. Hannula, Che-Yu Li
Erschienen in: Unified Constitutive Equations for Creep and Plasticity
Verlag: Springer Netherlands
Enthalten in: Professional Book Archive
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Constitutive equations based on state variables are very attractive in stress analysis because of their ability to characterize the consequences of mechanical history by current values of state variables. By virtue of this a state variable theory can organize and rationalize a wealth of accumulated data, and the ensuing economy in thought will automatically lead to economy in experiment.1 Moreover, with the aid of state equations, material behavior under difficult or even unmanageable conditions may be predicted by more readily performable tests; for example, long-term creep behavior at high temperatures might be estimated based on combined short-term tensile and relaxation testing at a lower temperature.