CAJ | 학술논문

基于一维磁致伸缩测量装置，提出了单片无取向硅钢片任意方向磁致伸缩特性的测量方法，得到了材料不同磁化方向上磁致伸缩回环，并提取了描述磁致伸缩特性的单值曲线。建立了描述磁致伸缩与磁场关系的λ-(θB, Bmax)磁致伸缩数学模型，给出了由测量数据拟合得到的二维磁致伸缩特性曲面。基于Fortran语言编制了耦合上述磁致伸缩模型的有限元计算程序，并分析了一台同步发电机定子铁心的磁致伸缩。研究表明，无取向硅钢片具有任意方向各向异性的磁致伸缩特性，而该文提出的磁致伸缩测试方法和数学模型可以有效地分析硅钢片磁致伸缩各向异性特性。
기우일유자치신축측량장치，제출료단편무취향규강편임의방향자치신축특성적측량방법，득도료재료불동자화방향상자치신축회배，병제취료묘술자치신축특성적단치곡선。건립료묘술자치신축여자장관계적λ-(θB, Bmax)자치신축수학모형，급출료유측량수거의합득도적이유자치신축특성곡면。기우Fortran어언편제료우합상술자치신축모형적유한원계산정서，병분석료일태동보발전궤정자철심적자치신축。연구표명，무취향규강편구유임의방향각향이성적자치신축특성，이해문제출적자치신축측시방법화수학모형가이유효지분석규강편자치신축각향이성특성。
Based on an one-dimensional (1-D) magnetostriction measurement device, a method measuring the magnetostrictive property along arbitrary directions for a non-oriented silicon steel sheet was proposed, and the magnetostrictive loops along the material’s different magnetization directions were obtained. The single value curves describing the magnetostrictive property were abstracted. Aλ-(θB, Bmax) magnetostrictive mathematical model was built to describe the relationship between magnetostriction and magnetization, and a 2-D magnetostrictive surface was interpolated from the measured data. Using FORTRAN computer language, the finite element calculation program coupled with magnetostrictive model above was compiled, and the magnetostriction in the stator core of a synchronous generator was analyzed. The study shows that the non-oriented silicon steel sheet has the anisotropic magnetostriction property along arbitrary directions, and the measurement method and the mathematical model proposed in this paper can be effectively used to analyze magnetostrictive anisotropy of the silicon steel sheet.