Analyzing Residual Stress in Hair-Pin Motors During Curing
Author Information
Author(s): Ma Mingze, Gan Hongyi, Shang Xiao, Song Linsen, Zhang Yiwen, Liu Jingru, Liu Chunbai, Hao Yanzhong, Zhang Xinming
Primary Institution: Changchun University of Science and Technology
Hypothesis
This research aims to explore the mechanisms of residual stress formation and optimization strategies during the curing process of hair-pin motor stator insulation.
Conclusion
Optimizing the curing process can significantly reduce maximum stress, thereby alleviating stress concentration and improving motor lifespan.
Supporting Evidence
- Residual stress increases the risk of partial discharge and shortens a motor’s lifespan.
- Optimizing the curing process reduced the maximum stress from 45.1 MPa to 38.6 MPa.
- The proposed model offers a reliable tool for stress prediction and process optimization in insulating materials.
- Temperature and strain monitoring during curing was achieved using a dual fiber Bragg grating sensor system.
Takeaway
This study looks at how to make hair-pin motors last longer by reducing stress during the curing process of their insulation.
Methodology
The study integrates three-dimensional numerical simulations and experimental analysis, using a dual fiber Bragg grating sensor system for monitoring temperature and strain.
Limitations
The study assumes relationships between material properties and the degree of cure, which may limit prediction accuracy, and does not account for flow consolidation effects.
Digital Object Identifier (DOI)
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