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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Ogden-Roxburgh model ： ウィキペディア英語版 Ogden-Roxburgh model The Ogden-Roxburgh model is an approach which extends hyperelastic material models to allow for the Mullins effect. It is used in several commercial finite element codes. The basis of pseudo-elastic material models is a hyperelastic second Piola–Kirchhoff stress $\backslash boldsymbol\_0$, which is derived from a suitable strain energy density function $W(\backslash boldsymbol)$: :$$ \boldsymbol = 2 \frac_0. Upon unloading and reloading $\backslash boldsymbol\_0$ is multiplied by a positive softening function $\backslash eta$. The function $\backslash eta$ thereby depends on the strain energy $W(\backslash boldsymbol)$ of the current load and its maximum $W\_(t)\; :=\; \backslash max\backslash$ in the history of the material: :$$ \boldsymbol = \eta(W, W_) \boldsymbol_0, \quad \text \eta \begin = 1, \quad & W = W_,\\ < 1, & W < W_ \end \quad . It was shown that this idea can also be used to extend arbitrary inelastic material models for softening effects. == References == L. Mullins, Rubber Chemistry and Technology, 42, 339 (1969). 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ogden-Roxburgh model」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.