基于A-V模型的改进模型及单轴棘轮效应预测

doi:10.12068/j.issn.1005-3026.2021.01.013

东北大学学报（自然科学版） ›› 2021, Vol. 42 ›› Issue (1): 83-90.DOI: 10.12068/j.issn.1005-3026.2021.01.013

基于A-V模型的改进模型及单轴棘轮效应预测

陈小辉¹，周杨¹，刘明月¹，蔺永诚²

(1.东北大学秦皇岛分校控制工程学院，河北秦皇岛066004； 2.中南大学机电工程学院，湖南长沙410083)

出版日期:2021-01-15 发布日期:2021-01-13
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; 蔺永诚(1976-)，男，湖南浏阳人，中南大学教授，博士生导师.
基金资助:
河北省自然科学基金青年基金资助项目(E2018501022)；中央高校基本科研业务费专项资金资助项目(N162303001，N182304009).

Improved Model Based on A-V Model and Prediction of Uniaxial Ratcheting Effects

CHEN Xiao-hui¹， ZHOU Yang¹， LIU Ming-yue¹， LIN Yong-cheng²

1. School of Control Engineering， Northeastern University at Qinhuangdao， Qinhuangdao 066004， China; 2. School of Mechanical and Electrical Engineering， Central South University， Changsha 410083， China.

Online:2021-01-15 Published:2021-01-13
Contact: CHEN Xiao-hui
About author:-
Supported by:
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摘要/Abstract

摘要： 针对A-V模型预测材料棘轮效应初始阶段不理想的缺点，对其参数γ₂进行了修正，同时引入Ramberg-Osgood(R-O)模型和各向同性硬化来计算应力-应变曲线，并确定了A-V模型的材料参数，建立了一种用来描述材料循环塑性行为的改进A-V模型.通过采用改进的A-V模型对Z2CND18.12N奥氏体不锈钢和SS316L钢的单轴棘轮效应进行了预测，并研究了平均应力、应力幅值、应力比和加载历史对单轴棘轮效应的影响.结果表明，改进的A-V模型对材料的棘轮应变预测值与试验值较为一致.

关键词: 金属材料;单轴棘轮效应;A-V本构模型;Ramberg-Osgood模型;各向同性硬化

Abstract: In view of the shortcomings of the A-V model which cannot well predict the initial stage of ratcheting effect of materials， the parameter γ₂ in the A-V model was modified and Ramberg-Osgood (R-O) model and isotropic hardening were introduced to calculate the stress-strain curve. The material parameters of the A-V model were determined， and an improved A-V model was established to describe the cyclic plastic behavior of materials. The uniaxial ratcheting effects of Z2CND18.12N austenitic stainless steel and SS316L steel were predicted by using the improved A-V model， and the influences of average stress， stress amplitude， stress ratio and loading history on the uniaxial ratcheting effect were studied. The results showed that the ratcheting strain predicted by the improved A-V model is consistent with the experimental value.

Key words: metallic material; uniaxial ratcheting effect; A-V constitutive model; Ramberg-Osgood model; isotropic hardening

中图分类号:

陈小辉，周杨，刘明月，蔺永诚. 基于A-V模型的改进模型及单轴棘轮效应预测[J]. 东北大学学报（自然科学版）, 2021, 42(1): 83-90.

CHEN Xiao-hui， ZHOU Yang， LIU Ming-yue， LIN Yong-cheng. Improved Model Based on A-V Model and Prediction of Uniaxial Ratcheting Effects[J]. Journal of Northeastern University(Natural Science), 2021, 42(1): 83-90.

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基于A-V模型的改进模型及单轴棘轮效应预测

Improved Model Based on A-V Model and Prediction of Uniaxial Ratcheting Effects

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[2]	陈小辉，陈旭. 核电站内压直管道在位移控制下的棘轮效应[J]. 东北大学学报:自然科学版, 2016, 37(7): 990-993.