建筑钢板件力磁效应的ANSYS有限元模拟研究

发布时间：2018-03-16 09:18

本文选题：钢结构　切入点：有限单元法　出处：《西安建筑科技大学学报(自然科学版)》2016年06期 　论文类型：期刊论文

【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 order to study the relationship between early damage of building steel and metal magnetic memory signal, a two-dimensional plane simulation of the force and magnetic effect of tensile load on Q345B steel, which is widely used in building structure, is carried out by using ANSYS finite element analysis software. The distribution of the normal component of magnetic leakage field intensity (By) and its gradient value K on the surface of artificial shallow groove specimen under different loads is obtained. The results show that the magnetic flux leakage signal in the stress concentration region in elastic stage increases regularly with the stress, and after yielding, the magnetic flux leakage signal in the stress concentration zone increases regularly with the stress. The influence range of magnetic flux leakage signal increases with the increase of elastic-plastic state in shallow groove, and the rapidly increasing plastic deformation affects the change of magnetic flux leakage signal by stress. Finally, the simulation results are compared with the experimental results. The feasibility and reliability of the simulation results are confirmed, which provides a reference for the application of metal magnetic memory detection technology in buildings and other fields.
【作者单位】：西安建筑科技大学土木工程学院;
【基金】：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)
【分类号】：TU392.4

【相似文献】