基于Chaboche模型的金属材料稳态循环应力-应变曲线的本构建模方法
Constitutive Modeling Method for Stable Cyclic Stress-Strain Curve of Metal Materials Based on Chaboche Model
摘 要
提出了一种以Ramberg-Osgood模型计算曲线作为试验曲线来建立描述金属材料稳态循环应力-应变曲线的Chaboche本构模型的方法, 并采用TC11钛合金疲劳试验数据加以验证。结果表明: 提出的建立金属材料稳态循环塑性本构模型的方法是可行的, 采用建立的Chaboche模型可以较准确地描述金属材料的稳态循环应力、应变响应, 与工程中常用的Ramberg-Osgood模型具有基本相同的描述效果; 可方便将该模型应用于疲劳寿命预测时金属材料结构的有限元应力、应变分析。
循环应力-应变曲线
本构模型
Ramberg-Osgood模型
Chaboche模型
metal material
cyclic stress-strain curve
constitutive model
Ramberg-Osgood model
Chaboche model
Abstract
A Chaboche constitutive modeling method for describing metal stable cyclic stress-strain relationship was proposed based on test datum calculated from Ramberg-Osgood model, and was evaluated by TC11 titanium alloy test datum. The result shows the method used to describe metal stable cyclic plastic constitutive model was feasible. The Chaboche model can be used to accurately depict metal stable cyclic stress-strain relationship. It had identical results with common Ramberg-Osgood model in Engineering. The Chaboche model was convenient for finite element stress-strain analysis for metal structures while predicting fatigue life.
中图分类号 TB125 TB741
所属栏目 物理模拟与数值模拟
基金项目 国防基础科研资助项目(B2520110003)
收稿日期 2012/10/16
修改稿日期 2013/8/7
网络出版日期
作者单位点击查看
备注吴志荣(1984-), 男, 江苏盐城人, 博士研究生。
引用该论文: WU Zhi-rong,HU Xu-teng,XIN Peng-peng,SONG Ying-dong. Constitutive Modeling Method for Stable Cyclic Stress-Strain Curve of Metal Materials Based on Chaboche Model[J]. Materials for mechancial engineering, 2013, 37(10): 92～95
吴志荣,胡绪腾,辛朋朋,宋迎东. 基于Chaboche模型的金属材料稳态循环应力-应变曲线的本构建模方法[J]. 机械工程材料, 2013, 37(10): 92～95
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参考文献
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【2】彭鸿博, 张宏建.金属材料本构模型的研究进展[J].机械工程材料, 2012, 36(3): 5-10.
【3】KOO G H, LEE J H. Investigation of ratcheting characteristics of modified 9Cr-1Mo steel by using the Chaboche constitutive model[J].International Journal of Pressure Vessels and Piping, 2007, 84(5): 284-292.
【4】TONG J, ZHAN Z L, VERMEULEN B. Modelling of cyclic plasticity and viscoplasticity of a nickel-based alloy using Chaboche constitutive equations[J].International Journal of Fatigue, 2004, 26(8): 829-837.
【5】HYDE C J, SUN W, LEEN S B. Cyclic thermo-mechanical material modelling and testing of 316stainless steel[J].International Journal of Pressure Vessels and Piping, 2010, 87(6): 365-372.
【6】YOU J H, MISKIEWICZ M. Material parameters of copper and CuCrZr alloy for cyclic plasticity at elevated temperatures[J].Journal of Nuclear Materials, 2008, 373(1/3): 269-274.
【7】姚卫星.结构疲劳寿命分析[M].北京: 国防工业出版社, 2003.
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