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无轴承异步电机的最大径向力有限元分析 被引量:12
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作者 李冰 邓智泉 严仰光 《中小型电机》 北大核心 2003年第3期20-24,共5页
无轴承电机是集成了径向磁轴承功能的高速电机 ,由于功率密度大、结构紧凑 ,它是大功率高速电机的发展趋势。本文利用有限元方法 (FEM)分析了无轴承异步电机的磁场 ,给出了磁场分布图 ,利用气隙磁密的分布计算了作用于转子的径向力。研... 无轴承电机是集成了径向磁轴承功能的高速电机 ,由于功率密度大、结构紧凑 ,它是大功率高速电机的发展趋势。本文利用有限元方法 (FEM)分析了无轴承异步电机的磁场 ,给出了磁场分布图 ,利用气隙磁密的分布计算了作用于转子的径向力。研究表明 ,径向力绕组电流和径向力大小之间的关系受电机磁饱和的影响 ,可计算出最大径向力。本文形象地揭示了无轴承异步电机的径向力产生机理 。 展开更多
关键词 无轴承异步电机 最大径向力 有限元分析 磁轴承 气隙磁密 数学模型
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Study of the location of testing area in residual stress measurement by Moiré interferometry combined with hole-drilling method 被引量:2
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作者 QIN Le XIE HuiMin +3 位作者 ZHU RongHua WU Dan CHE ZhiGang ZOU ShiKun 《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS 2014年第4期708-715,共8页
This paper investigates the effect of the location of testing area in residual stress measurement by Moiréinterferometry combined with hole-drilling method.The selection of the location of the testing area is ana... This paper investigates the effect of the location of testing area in residual stress measurement by Moiréinterferometry combined with hole-drilling method.The selection of the location of the testing area is analyzed from theory and experiment.In the theoretical study,the factors which affect the surface released radial strainεr were analyzed on the basis of the formulae of the hole-drilling method,and the relations between those factors andεr were established.By combining Moiréinterferometry with the hole-drilling method,the residual stress of interference-fit specimen was measured to verify the theoretical analysis.According to the analysis results,the testing area for minimizing the error of strain measurement is determined.Moreover,if the orientation of the maximum principal stress is known,the value of strain will be measured with higher precision by the Moiréinterferometry method. 展开更多
关键词 hole-drilling residual stress Moiré interferometry testing area
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