Journal
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
Volume 29, Issue 1, Pages 123-131Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S1003-6326(18)64921-0
Keywords
C/C-SiC composites; brake; tribological behavior; temperature field; thermal-stress field
Categories
Funding
- National Natural Science Foundation of China [51575536]
- National Key Research and Development Program of China [2016YFB0301403]
- Graduate Degree Thesis Innovation Foundation of Central South University, China [2017zzts435]
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The tribological properties and thermal-stress behaviors of C/C-SiC composites during braking were investigated aiming to simulate braking tests of high-speed trains. The temperature and structural fields of C/C-SiC composites during braking were fully coupled and simulated with ANSYS software. The results of tribological tests indicated that the C/C-SiC composites showed excellent static friction coefficient (0.68) and dynamic friction coefficient (average value of 0.36). The highest temperature on friction surface was 445 degrees C. The simulated temperature field showed that the highest temperature which appeared on the friction surface during braking was about 463 degrees C. Analysis regarding thermal-stress field showed that the highest thermal-stress on friction surface was 11.5 MPa. The temperature and thermal-stress distributions on friction surface during braking showed the same tendency.
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