摘要
利用ANSYS有限元分析软件,对Q235钢在地磁环境下静拉伸试验的力-磁效应进行模拟,并将模拟结果与漏磁信号测量结果进行比较,证明了两者有较好的一致性;对磁场值曲线取一阶微分,以峰-谷差值DH、峰-谷间距DL对试件应力集中程度进行判断,试验结果表明,此评价标准具有合理性,可望在应力集中早期诊断的定量化分析中有很好的实际应用价值.
The stress-magnetization effect of Q235 steels static tensile under the geomagnetic field is simulat- ed by using the finite element analysis（FEA）software ANSYS. The simulation results have a good agreement with the experimental test of magnetic flux leakage （MFL）. The peak-valley difference DH and peak-valley spacing DL are defined to estimate the degree of stress concentration by analyzing the first derivative MFL sig- nal of magnetic field curve, which turns out to be reasonable to value the stress concentration on metal mag- netic memory（MMM）testing. The simulation has some good references for the research on quantitative analy- sis of early diagnose.
出处
《测试技术学报》
2013年第2期167-173,共7页
Journal of Test and Measurement Technology
基金
国家自然科学基金资助项目(61072082)
中央高校基础科研业务费资助项目(FRF-MP-12-008A)
关键词
金属磁记忆
有限元
力-磁效应
漏磁信号
应力集中
metal magnetic memory
finite element analysis
stress-magnetization effect
magnetic leakage signal
stress concentration
