Degradation and fatigue of epoxy impregnated traction motors due to thermal and thermal induced mechanical stress - Part II : Thermal mechanical simulation of multiple wires due to evenly and unevenly distributed temperature
Degradation and fatigue of epoxy impregnated traction motors due to thermal and thermal induced mechanical stress - Part II : Thermal mechanical simulation of multiple wires due to evenly and unevenly distributed temperature
复制标题
由于热和热引起的机械应力引起的环氧树脂浸渍牵引电机的退化和疲劳 - 第二部分：由于均匀和不均匀的温度分布而引起的多根电线的热机械模拟
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
M. Alaküla
中科院分区：
文献类型：
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作者：
Zhe Huang;A. Reinap;M. Alaküla
第一部分的研究提出的重要性和分析和数值方法进行热机械应力模拟与均匀分布的温度为单根导线。第二部分的研究提出了一种方法，热和机械共轭模拟与不均匀分布的温度为多根导线和结果进行比较，均匀分布的温度与相同的几何结构的结构模拟。根据派绝热材料的应力-疲劳曲线，拟合出应力-疲劳方程，并以此估算材料在热机械应力作用下的寿命。将该估计寿命与基于Arrhenius定律的估计寿命和加速寿命试验进行比较。（减）
Part I of the study presents the importance and the analytical and numerical methods to perform a thermal- mechanical stress simulation with evenly distributed temperature for single wires. Part II of the study presents a method with thermal and mechanical conjugated simulations with unevenly distributed temperature for multiple wires and the results are compared to the structural simulation with evenly distributed temperature with the same geometry. Furthermore, based on the stress-fatigue curve of PAI insulation material, the stress-fatigue equation is fitted, which is adopted to estimate the lifetime due to thermal-mechanical stresses. This estimated life is compared to the estimated life based on Arrhenius Law and to the accelerated lifetime test. (Less)