塑性ひずみによって生じるクリープ異方性の記述 : 第3報, 発展式の増分形式

概要

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The present study aims to develop a rate-type evolutional equation for the anisotropic internal state which has been discussed in previous studies. The approach employed follows the general formalism of irreversible thermodynamics. We first define a free energy function and discuss the thermodynamic forces associated with the assumed internal variables on the basis of the Clausius-Duhem inequality. The evolutional equations of the state variables are described by means of a dissipation potential which includes recovery potential. The model has the feature of fictitious decomposition of the internal state variables and the associated dual variables into the isotropic and kinematic parts, respectively. An additional state variable is naturally introduced in the extension, which may describe an effect of nonproportionality.
一般社団法人日本機械学会の論文
1991-08-25