摘要
某混合动力汽车电机转子的转轴与硅钢片之间采用了过盈装配。为研究该装配工艺的结构可靠性,通过CAE方法分析转子结构的装配应力,并进行疲劳寿命计算。对比相同结构采用间隙与过盈装配后的应力计算结果,发现合理的过盈量选择,可降低转子结构在不同转速下的应力波动。深入分析表明,离心应力波动较大的旋转构件,可在径向方向引入过盈装配,提高装配件的抗疲劳能力。
The interference fit between HEV motor rotor shaft and dynamo sheets was discussed in this paper. Assembly stress was analyzed and fatigue life was predicted by CAE method to study the motor rotor＇ s structural reliability. Comparison with the VonMises stress results under different assembling methods shows, proper use of interference fit can reduce the stress fluctuation of matching components in deferent rotational speeds. Deeply research proves that interference fit in rotational part＇ s radial direction can obviously improve the fatigue performance if high stress fluctuation caused by centrifugal force exists.
出处
《机械强度》
CAS
CSCD
北大核心
2015年第1期104-108,共5页
Journal of Mechanical Strength
基金
国家863高技术基金项目(2011AA11A201)资助~~
关键词
电机转子
过盈配合
装配应力
强度分析
疲劳寿命
Motor rotor
Interference fit
Assembly stress
Strength analysis
Fatigue life
