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Development of a Method to Predict Fatigue Failure Life of Junction Block Bracket Using CAE
Technical Paper
2001-01-1099
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Event:
SAE 2001 World Congress
Language:
English
Abstract
With the rapid advances in electronic control within automobiles, the junction block (J/B), primarily used for electrical transmission and electrical wiring, has begun to house electronic control units. It is evolving into an active component with smart functions that also controls vehicle devices, at the core of the wiring harness.
We have developed a method using CAE to predict the fatigue failure life of J/B brackets for use as a design-assist tool in the early stage of J/B development.
Failure of J/B brackets starts with the repetitive stress generated in the brackets during resonance. This stress is maximum at primary natural vibration which is the lowest frequency during resonance.
By accurately estimating the above-mentioned stresses using CAE, we established a method to determine the number of vibrations at which fatigue failure of the J/B bracket would occur (fatigue failure life) from the fatigue failure life characteristics of the material.
It is expected that the man-hours required to perform conventional evaluation tests will be greatly reduced by utilizing this method.
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Authors
- Kouji Ohta - Sumitomo Wiring Systems, Ltd.
- Yasushi Sugiyama - Sumitomo Wiring Systems, Ltd.
- Hitoshi Kawabe - Sumitomo Wiring Systems, Ltd.
- Yoshihiro Kohtake - Sumitomo Wiring Systems, Ltd.
- Masashi Narita - Sumitomo Electric Industries, Ltd.
- Tomohiro Keishi - Sumitomo Electric Industries, Ltd.
- Mikio Kaji - Sumitomo Electric Industries, Ltd.
Citation
Ohta, K., Sugiyama, Y., Kawabe, H., Kohtake, Y. et al., "Development of a Method to Predict Fatigue Failure Life of Junction Block Bracket Using CAE," SAE Technical Paper 2001-01-1099, 2001, https://doi.org/10.4271/2001-01-1099.Also In
SAE 2001 Transactions Journal of Passenger Cars - Electronic and Electrical Systems
Number: V110-7; Published: 2002-09-15
Number: V110-7; Published: 2002-09-15
References
- Modeling and Simulation of Deformation Behavior by an Homogenizing Method for Molded Particle-Reinforced Composite Materials Higa Yoshikazu Tomita Yosihiro
- The Reliability of Housing Locking Structure of Electric Connector for Automobile Ohta Kouji Sugiyama Yasushi Ohsawa Hiroki Matsumoto Kouichi Paper No. 970304