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Fatigue Life Analysis of Automotive V-belt Pulley
Technical Paper
2007-01-3729
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Fatigue life of a V-belt pulley, which is commonly used in automotive powertrain to transfer power to other parts, is predicted based on damage analysis by finite element analysis (FEA). Load conditions on pulley are analyzed by considering interactions among the pulley, V belt, bracket and bolts. Both normal force and traction force on the contact surfaces between the pulley and V belt were calculated. Assembly load due to the tightening of the bolts as well as operation load was considered to describe the actual load conditions in durability test. Static analysis at initial position of the pulley after assembly was performed with given load conditions. As the pulley rotated every ten degrees, consecutive static analyses were followed to find out the stress history of the pulley during operation. Using stress history data calculated from FE analysis, damage over one rotation of pulley was calculated and fatigue life, number of rotation to failure, was estimated. Durability test for the pulley used in the analysis was followed to verify the analysis results. Comparison between analysis and experimental results showed that analysis results correlated with the experimental results closely.
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Authors
Citation
Kim, B., Kim, Y., Chun, D., Ahn, S. et al., "Fatigue Life Analysis of Automotive V-belt Pulley," SAE Technical Paper 2007-01-3729, 2007, https://doi.org/10.4271/2007-01-3729.Also In
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