Elastoplastic Models Based on a Structural Local Approach for Predicting the Ratcheting Phenomenon

建立在一局部結構分析棘輪現象預測基礎上的彈塑性模型

努爾迪訥－達拉(Noureddine Della) ； 麥其－拉赫比(Mekki Larabi) ； 巴赫裏－伍爾達－謝赫(Bahri Ould Chikh)

《中國機械工程學刊》 35卷3期 (2014/06) Pp. 179-186

摘要

本研究是嘗試在考慮週期性負載因素下，著重對材料性能模型的構建。論文重點對棘輪現象以及其預測條件進行了深入分析。鑒於目前現有大多數模型的對於棘輪現象的考慮不足，本文使用了壹種比較方便的辦法，從保持最主要微觀分析特性的思路出發，使用壹種簡潔的分析方法，對鋼性機械局部範圍的相互作用進行研究。該研究方法是壹種局部結構分析，或者是更准確講是Zarka教授（巴黎高科）提出的系統分析方法。

並列摘要

This work is devoted to modeling the materials behavior under cyclic loading. The ratcheting behavior has taken a predominant place in this study since most of the existing constitutive models fail to simulate these complex phenomena. For this purpose, and instead of using a phenomenological model as it is the case for most existing models, a more useful method, taking into account the fundamental interactions between microscopic elements, is considered in this paper. This approach is known as a structural local approach or more exactly the systematic approach of Zarka.

並列關鍵字

Plasticity ； cyclic loading ； ratcheting ； limit surface