Abdel-Karim-Ohno模型改进及Z2CDN18.12N不锈钢棘轮效应预测

东北大学学报（自然科学版） ›› 2023, Vol. 44 ›› Issue (3): 392-398.DOI: 10.12068/j.issn.1005-3026.2023.03.012

Abdel-Karim-Ohno模型改进及Z2CDN18.12N不锈钢棘轮效应预测

陈小辉，刘明月，刘世纪，田育松

(东北大学秦皇岛分校控制工程学院，河北秦皇岛066004)

修回日期:2022-01-05 接受日期:2022-01-05 发布日期:2023-03-24
通讯作者: 陈小辉
作者简介:陈小辉(1982-)，女，河北秦皇岛人，东北大学副教授.
基金资助:
中央高校基本科研业务费专项资金资助项目(N2123028)；河北省自然科学基金青年基金资助项目(E2021501011).

Modified Abdel-Karim-Ohno Model and Ratcheting Effect Prediction of Z2CDN18.12N Stainless Steel

CHEN Xiao-hui， LIU Ming-yue， LIU Shi-ji， TIAN Yu-song

School of Control Engineering， Northeastern University at Qinhuangdao， Qinhuangdao 066004， China.

Revised:2022-01-05 Accepted:2022-01-05 Published:2023-03-24
Contact: CHEN Xiao-hui
About author:-
Supported by:
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摘要/Abstract

摘要： 为更好地描述Z2CDN18.12N奥氏体不锈钢的单轴棘轮行为，在统一黏塑性循环本构理论框架下，改进了Abdel-Karim-Ohno模型. 将塑性应变记忆面引进各向硬化率中，之后进行模型参数确定，进而用Abdel-Karim-Ohno模型和改进Abdel-Karim-Ohno模型对Z2CDN18.12N奥氏体不锈钢在室温下的单轴棘轮效应进行研究.利用两种模型分别研究了平均应力、应力幅值、应力率及加载历史等对Z2CDN18.12N奥氏体不锈钢单轴棘轮行为的影响. 结果表明: 在恒定的加载率条件下，单轴棘轮应变水平随平均应力和应力幅值的增大而提高; 随应力率的增大而降低，而且对较低的应力率更为敏感; 单轴棘轮行为受加载历史影响显著.通过对比两种模型对材料的单轴棘轮行为的预测结果与试验数据，证明了本文改进模型的有效性.

中图分类号:

陈小辉，刘明月，刘世纪，田育松. Abdel-Karim-Ohno模型改进及Z2CDN18.12N不锈钢棘轮效应预测[J]. 东北大学学报（自然科学版）, 2023, 44(3): 392-398.

CHEN Xiao-hui， LIU Ming-yue， LIU Shi-ji， TIAN Yu-song. Modified Abdel-Karim-Ohno Model and Ratcheting Effect Prediction of Z2CDN18.12N Stainless Steel[J]. Journal of Northeastern University(Natural Science), 2023, 44(3): 392-398.

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Abdel-Karim-Ohno模型改进及Z2CDN18.12N不锈钢棘轮效应预测