双曲面本构中单轴棘轮描述的塑性模量研究

重庆交通大学学报（自然科学版） ›› 2010, Vol. 29 ›› Issue (3): 379-382.

双曲面本构中单轴棘轮描述的塑性模量研究

向阳开¹,马艳兵¹,郑怡²,周志祥¹

1.重庆交通大学土木建筑学院, 重庆 400074; 2.辽宁省建筑材料监督检验院, 辽宁沈阳 110032

收稿日期:2010-03-11 出版日期:2010-06-15 发布日期:2015-01-22
作者简介:向阳开(1964—) , 男, 湖南湘潭人, 副教授, 博士, 主要从事固体力学及桥梁结构力学行为分析。E-mail:xiangyangkai@163.com。
基金资助:
教育部科学技术研究重点项目( 02132 )

Study on Uni-axial Ratcheting Describing Plastic Modulus of Two-Surface Constitutive Model

XIANG Yang-kai¹,MA Yan-bing¹,ZHENG Yi²,ZHOU Zhi-xiang¹

1.School of Civil Engineering & Architecture,Chongqing Jiaotong University,Chongqing 400074,China;2.Liaoning Supervision & Test Institution for Construction Materials Quality,Shenyang 110032,Liaoning,China

Received:2010-03-11 Online:2010-06-15 Published:2015-01-22

摘要/Abstract

摘要： 开展了两种材料在不同应力水平和不同应力幅值下的单轴棘轮效应实验,进行了实验结果的塑性流动特性分析;揭示了单轴应力循环下的棘轮效应特征和塑性模量在正、反向加载时所遵循的不同演化规律,分析并指出了现有双曲面本构模型无法正常描述棘轮效应的实质。在此基础上,引入了新的塑性模量演化公式,并开展了数值模拟,通过与实验结果比较发现,两者吻合较好,从而验证了塑性模量演化公式的合理性。

关键词: 棘轮效应, 双曲面本构模型, 塑性模量

Abstract: The uni-axial ratcheting experiments of two materials under different mean stress and stress amplitude are carried out, and the plastic flow characteristics of experiment results are also analyzed. Both features of the uni-axial ratcheting and different evolution rules of plastic modulus at the symmetric loading points are presented. The nature that the current two?? surface constitutive model fails to describe the ratcheting is also revealed. On the basis mentioned above, a new plastic modulus formula is introduced; meanwhile, the numerical simulation is also carried out. Through the comparative tests carried out between the simulation and the experiment, it is discovered that simulation results matches well with experiment results. So the reasonability of the plastic modulus formula is verified.

Key words: ratcheting, two-surface constitutive model, plastic modulus

中图分类号:

O341

向阳开,马艳兵,郑怡,周志祥. 双曲面本构中单轴棘轮描述的塑性模量研究[J]. 重庆交通大学学报（自然科学版）, 2010, 29(3): 379-382.

XIANG Yang-kai,MA Yan-bing1,ZHENG Yi,ZHOU Zhi-xiang. Study on Uni-axial Ratcheting Describing Plastic Modulus of Two-Surface Constitutive Model[J]. Journal of Chongqing Jiaotong University(Natural Science), 2010, 29(3): 379-382.

[1]	向阳开，郑怡，周志祥，李书芳. 比例及非比例路径下16Mn 钢的应力控制循环加载实验[J]. 重庆交通大学学报（自然科学版）, 2010, 29(2): 311-314.
[2]	向阳开, 高庆, 杨显杰. 比例及非比例应力循环加载条件下的棘轮效应研究[J]. 重庆交通大学学报（自然科学版）, 1999, 18(4): 23-29.