[1]苏三庆,高 波,王 威,等. 建筑钢板件力磁效应的ANSYS有限元模拟研究[J].西安建筑科技大学学报(自然科学版),2016,48(06):771-775,782.[doi:10.15986/j.1006-7930.2016.06.001]
　SU Sanqing,Gao Bo,Wang Wei,et al. Research on ANSYS finite element simulation of stress-magnetization effect on tensile steel plate[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2016,48(06):771-775,782.[doi:10.15986/j.1006-7930.2016.06.001]
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 建筑钢板件力磁效应的ANSYS有限元模拟研究()
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西安建筑科技大学学报（自然科学版）[ISSN:1006-7930/CN:61-1295/TU]

卷:
48
期数:
2016年06期
页码:
771-775,782
栏目:
出版日期:
2016-12-31

文章信息/Info

Title:
 Research on ANSYS finite element simulation of stress-magnetization effect on tensile steel plate
文章编号:
1006-7930(2016)06-0771-05
作者:
 苏三庆; 高 波; 王 威; 易术春; 马小平
 西安建筑科技大学土木工程学院，陕西 西安 710055
Author(s):
 SU Sanqing;  Gao Bo;  Wang Wei;  yi Shuchun;  MA Xiaoping
School of Civil Engineering, Xiʹan Univ. of Arch. & Tech., Xiʹan 710055, China
关键词:
钢结构; 有限单元法; 金属磁记忆; 应力集中; 力磁效应
Keywords:
steel structure;  finite element method;  metal magnetic memory;  stress concentration;  stress-magnetic effect
分类号:
TU94+2；TG115.28
DOI:
10.15986/j.1006-7930.2016.06.001
文献标志码:
A
摘要:
为研究建筑用钢早期损伤和金属磁记忆信号的相互关系，采用ANSYS有限元分析软件，通过对建筑结构广泛使用的Q345B钢进行地球磁场下拉伸荷载的力磁效应二维平面模拟，得到不同载荷下人工浅槽试件表面漏磁场强度法向分量B(y)及其梯度值K的分布规律．研究表明，弹性阶段应力集中区的漏磁信号随应力呈规律性增加，屈服后，浅槽部位进入弹塑性状态的范围增加，漏磁信号的影响范围也随之扩大，较快增长的塑性变形对用应力来表征漏磁信号变化造成了影响，最后将模拟结果和试验结果对比，证实了模拟结果的可行性与可靠性，为金属磁记忆检测技术在建筑等领域的应用提供参考依据．
Abstract:

In the study on the relationship between early damage of building steel and metal magnetic memory signal, the stress concentration evaluation method using the normal component of the magnetic flux leakage signal B(y) and its gradient K are presented based on widely used steel Q345B in building structures under the geo-magnetic field. The finite element method by ANSYS analysis software was used to model two human-made tiny pits in the middle of specimens, the distribution of magnetic memory signal under different applied loads, namely the stress-magnetization effect, was analyzed. Results show that, magnetic flux leakage signal around stress concentration area rises regularly with stress increasing under the elastic stage. After yielding, the area of tiny pit portion goes into the inelastic state, as the range increases, and the scope of magnetic flux leakage signal expands as well. Additionally, the rapid growth of plastic deformation affects magnetic flux leakage characterized by the stress change. Finally, the corresponding experiments were tested to validate the results of modeling. The research results can serve as a reference of application to metal magnetic memory(MMM) test technique for building steel structure.

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备注/Memo

备注/Memo:
收稿日期：2016-04-01 修改稿日期：2016-10-28

基金项目：国家自然科学基金资助面上项目(51478383,51578449)；陕西省自然科学基金资助面上项目(2015JM5192)

作者简介：苏三庆(1961－)，男，教授，博导，主要从事结构抗震设计、健康监测方面的研究．E-mail: sussq@xauat.edu.cn
更新日期/Last Update: 2017-01-26