| タイトル | A survey of unified constitutive theories |
| 本文（外部サイト） | http://hdl.handle.net/2060/19850023218 |
| 著者（英） | Walker, K. P.; Lindholm, U. S.; Bodner, S. R.; Chan, K. S. |
| 著者所属（英） | Southwest Research Inst. |
| 発行日 | 1985-06-01 |
| 言語 | eng |
| 内容記述 | The state of the art of time temperature dependent elastic viscoplastic constitutive theories which are based on the unified approach werre assessed. This class of constitutive theories is characterized by the use of kinetic equations and internal variables with appropriate evolutionary equations for treating all aspects of inelastic deformation including plasticity, creep, and stress relaxation. More than 10 such unified theories which are shown to satisfy the uniqueness and stability criteria imposed by Drucker's postulate and Ponter's inequalities are identified. The theories are compared for the types of flow law, kinetic equation, evolutionary equation of the internal variables, and treatment of temperature dependence. The similarities and differences of these theories are outlined in terms of mathematical formulations and illustrated by comparisons of theoretical calculations with experimental results which include monotonic stress-strain curves, cyclic hysteresis loops, creep and stress relaxation rates, and thermomechanical loops. Numerical methods used for integrating these stiff time temperature dependent constitutive equations are reviewed. |
| NASA分類 | STRUCTURAL MECHANICS |
| レポートNO | 85N31531 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/566880 |
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