| タイトル | On the use of internal state variables in thermoviscoplastic constitutive equations |
| 本文（外部サイト） | http://hdl.handle.net/2060/19850023223 |
| 著者（英） | Beek, J. M.; Allen, D. H. |
| 著者所属（英） | Texas A&M Univ. |
| 発行日 | 1985-06-01 |
| 言語 | eng |
| 内容記述 | The general theory of internal state variables are reviewed to apply it to inelastic metals in use in high temperature environments. In this process, certain constraints and clarifications will be made regarding internal state variables. It is shown that the Helmholtz free energy can be utilized to construct constitutive equations which are appropriate for metallic superalloys. Internal state variables are shown to represent locally averaged measures of dislocation arrangement, dislocation density, and intergranular fracture. The internal state variable model is demonstrated to be a suitable framework for comparison of several currently proposed models for metals and can therefore be used to exhibit history dependence, nonlinearity, and rate as well as temperature sensitivity. |
| NASA分類 | STRUCTURAL MECHANICS |
| レポートNO | 85N31536 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/566875 |
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