计算机有限元仿真在钢缆在线定量检测中的应用  

Application of computer finite element simulation in steel cable online quantitative testing

作　　者：柴秀丽[1,2] 杜海顺[1,2] 赵建军[1,2] 

机构地区：[1]河南大学先进控制与智能信息处理研究所,河南开封475001 [2]河南大学计算机与信息工程学院,河南开封475001

出　　处：《传感器与微系统》2009年第8期116-117,120,共3页Transducer and Microsystem Technologies

基　　金：河南省科技攻关计划资助项目(072102260022)

摘　　要：钢缆在线检测时,钢缆与检测设备之间相对运动,钢缆中产生的涡流严重影响缺陷定量检测的精度。采用电磁场有限元专业软件,选择二维轴对称柱坐标系,创建钢缆缺陷检测结构的几何实体模型,利用瞬态求解器数值计算了磁路磁力线分布和钢缆截面涡流分布。研究发现:随着速度的增加,磁路磁力线密度逐渐增加,涡流密度先增加后减小,磁力线和涡流的扩散方向与速度方向有关。研究结果与国外发表文献中的实验结果相符合,验证了有限元仿真在钢缆在线检测中的有效性。when the steel cable is online tested, the cable and detection instrument make relative movement, and the eddy current arising in the cable severely affects the accuracy of the flaw quantitative detection. The professional electromagnetic finite element software is adopted, two-dimensional axisymmetrical pole coordinate is chosen, geomeric full-scale model of the steel cable flaw testing structure is built, and magnetic circuit flux line distribution and eddy current distribution are numerically simulated using the transient solver. The analysis results show that, with the increasing of the velocity, magnetic circuit flux line density adds, the eddy current density first increases and then decreases, and diffusion direction of flux line and eddy current has something to do with the direction of the velocity. Results are in agreement with experiment results of foreign public publication papers, and it proves validity of the application of finite element simulation in steel cable online testing.

关 键 词：在线检测 有限元专业软件 数值计算 瞬态求解器 

分 类 号：TH878.3[机械工程—仪器科学与技术]