- ISSN 0258-2724
- CN 51-1277/U
- EI Compendex
- Scopus
- Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
- Chinese S&T Journal Citation Reports
- Chinese Science Citation Database
| Citation: | XU Ping, HONG Zhikang, SHEN Jiaxing, YU Yinghua. Thermal Characteristics of Steel-BFPC Interface Under Oil Medium[J]. Journal of Southwest Jiaotong University, 2023, 58(6): 1303-1310. doi: 10.3969/j.issn.0258-2724.20210719
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In order to study the thermal characteristics of the interface composed of steel and basalt fiber polymer concrete (BFPC) under oil medium conditions, the discrete principle was first used to calculate the actual contact area of the steel-BFPC interface. Since the contact surface is essentially a micro convex contact, the micro convex body is subjected to certain extrusion, forming an area with different extrusion stresses. Therefore, the accuracy of the actual contact area was further improved while considering the specific gravity of contact. Then, based on the morphology characteristics of the interface and Fourier’s law, the heat transfer mechanism of the steel-BFPC interface under oil medium conditions was analyzed. Finally, the influence of different loads (0.2, 0.4, 0.6, 0.8, and 1.0 MPa) on the thermal characteristic parameters of the interface was analyzed through theoretical calculation and experimental research. The results show that with the increase in load, the contact thermal resistance decreases, and the heat transfer coefficient and thermal conductivity coefficient increase. Under different loads, the error of contact thermal resistance between theoretical calculation and experimental calculation is 6.40%, 6.18%, 5.85%, 4.61%, and 3.73%, respectively. The error of contact thermal resistance decreases with increasing load.
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