Effects of External Stress on Magnetic Properties in Motor Cores
Effects of External Stress on Magnetic Properties in Motor Cores
复制标题
外部应力对电机铁芯磁性能的影响
DOI：
10.1541/ieejfms1990.117.3_311
复制
发表时间：
1997
影响因子：
--
通讯作者：
T. Sasaki
中科院分区：
文献类型：
--
作者：
Ken;Shimomura Eiji;Yamada Kazuo;T. Sasaki
为了模拟安装在电机机架上的铁芯的磁性行为，研究了收缩接头对铁芯磁性的影响。当然，收缩接头会降低磁导率，增加有效磁致伸缩和磁损耗。众所周知，磁致伸缩的增加和磁导率的减少可以用压缩应力引起的磁弹性能的增加来解释。然而，磁损失的增加不能用这种能量来解释。我们通过实验证明，由于铁芯在压缩应力下的磁致伸缩运动而引起的机械功导致了磁损耗的增加。©1998 Scripta Technica, electric engineering Jpn, 123(1): 15 - 22,1998
The effects of shrink fitting on the magnetic properties of iron cores are investigated in order to simulate the magnetic behavior of iron cores mounted in motor frames. Shrink fittings, of course, decrease permeability and increase effective magnetostriction and magnetic loss. It is well known that the magnetostriction increment and the permeability decrement are explained by the increase of magnetoelastic energy due to compressive stress by shrink fitting. The magnetic loss increases, however, cannot be explained by this energy. We demonstrate experimentally that the magnetic loss increases result from mechanical work due to the magnetostrictive movement of the iron core under compressive stress. © 1998 Scripta Technica, Electr Eng Jpn, 123(1): 15–22, 1998