A Modified Johnson–Cook Constitutive Model for the Compressive Flow Behaviors of the SnSbCu Alloy at High Strain Rates

The SnSbCu alloy is widely used as the material for the main bearing in low-speed marine engines, and an accurate constitutive model is the foundation for studying the frictional behaviors of bearings. In this work, the compressive flow behaviors of the SnSbCu alloy were considered under the differe...

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Bibliographic Details
Published in:Journal of materials engineering and performance 2019-11, Vol.28 (11), p.6958-6968
Main Authors: Xu, Hanzhang, Zhao, Bin, Lu, Xiqun, Liu, Zhigang, Li, Tongyang, Zhong, Ning, Yin, Xunshuai
Format: Article
Language:English
Subjects:
ALLOYS
Characterization and Evaluation of Materials
Chemistry and Materials Science
COMPRESSION
Corrosion and Coatings
Engineering Design
FINITE ELEMENT METHOD
MATERIALS SCIENCE
NANOSTRUCTURES
Quality Control
Reliability
Safety and Risk
STRAIN RATE
STRAINS
Tribology
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Summary:The SnSbCu alloy is widely used as the material for the main bearing in low-speed marine engines, and an accurate constitutive model is the foundation for studying the frictional behaviors of bearings. In this work, the compressive flow behaviors of the SnSbCu alloy were considered under the different strain rates (1000-5000 s −1 ) and temperatures (20-110 °C) by quasi-static and split-Hopkinson pressure bar dynamic compression tests. First, the original Johnson–Cook model was used to describe the constitutive relation of the SnSbCu alloy at high strain rates, and the results predicted by the original model showed relatively large errors compared with the experimental results since the coupled effect of temperature and strain rate was omitted. Then, a modified Johnson–Cook constitutive model was developed to describe the compressive flow behaviors of the SnSbCu alloy, and the results predicted by this modified model agreed well with the experimental data. Moreover, a finite element analysis was also conducted to verify the accuracy of the modified Johnson–Cook model.
ISSN:1059-9495
1544-1024
DOI:10.1007/s11665-019-04407-2