學歷/學位

工學博士

碩導/博導

碩導

行政職務

教研室

機械工程教研室

研究方向

機械表界面科學、油氣鉆采裝備與工具智能化、人工智能

研究生招生學科專業

機械工程；機械；動力工程及工程熱物理；動力工程

電子郵件/聯系電話

[email protected]

個人簡介

劉云海，四川樂山人，2019年獲得西南交通大學機械設計及理論工學博士學位。主要從事機械表界面科學、油氣鉆采裝備與工具智能化、人工智能等基礎研究與工程應用方面的工作，在carbon (IF:11.307，期刊封面)、Applied Surface Science (IF: 7.392，期刊封面)等SCI期刊發表論文30余篇。作為主要研究人員參加了973、國家自然科學基金等項目10余項，現工作于“國家杰青”祝效華教授課題組，擁有一流的的實驗條件和充足的科研經費。此外，本人與清華大學、西南交通大學、四川大學等科研院校建立了良好的合作關系，可以為各位同學提供一個更高的學習平臺！

工作經歷

2024.01-至今    西南石油大學機電工程學院 副研究員

2020.02-2023.12 西南石油大學機電工程學院 助理研究員 博士后導師：祝效華（“國家杰青”）

代表性科研成果

一、部分代表期刊論文：

1. Yunhai Liu, Lei Chen*, et al. Origin of low friction in hydrogenated diamond-like carbon films due to graphene nanoscroll formation depending on sliding mode: Unidirection and reciprocation. Carbon, 173 (2021): 696-704.(SCI, 一區, IF: 11.307，期刊封面)

2. Yunhai Liu, Yilong Jiang, et al. Durable superlubricity of hydrogenated diamond-like carbon film against different friction pairs depending on their interfacial interaction. Applied Surface Science, 2021, 560: 150023.(SCI, 一區, IF: 7.392，期刊封面)

3. Yunhai Liu*, Hu Zhang. Roles of transfer layer and surface adhesion on superlubricity behaviors of diamond-like carbon film depending on rotating and reciprocating motion. Applied Surface Science, 2022, 604: 154538. (SCI, 一區, IF: 7.392)

4. Yunhai Liu, Bingjun Yu, et al. Probing superlubricity stability of hydrogenated diamond-like carbon film by varying sliding velocity, Applied Surface Science, 439 (2018): 976-982.(SCI, 一區, IF: 7.392)

5. Yunhai Liu*, Hu Zhang, et al. Probing the low friction mechanism of hydrogen-free DLC film in oxygen and nitrogen environments by first-principles calculations and molecular dynamics simulation[J]. Surface and Coatings Technology, 2023: 129219.(SCI, 一區, IF: 5.4)

6. Yunhai Liu*, Hu Zhang. The synergistic mechanism between graphitized tribofilm and graphitized surface of diamond-like carbon film under different temperature environments. Diamond and Related Materials, 2022: 108875.(SCI, 二區, IF: 4.1)

7. Yunhai Liu*, Hu Zhang, et al. Exploring the effects of water content on friction behavior and mechanism of DLC films in oil production environment based on molecular dynamics simulation and first-principles calculations[J]. Diamond and Related Materials, 2023, 139: 110294.(SCI, 二區, IF: 4.1)

8. Yunhai Liu*, Penghui Xu, et al. Interfacial Friction Evolution of DLC Films on the Fracturing Pump Plungers During the CO₂ Fracturing Process: An Atomic Understanding from ReaxFF Simulations[J]. Tribology Letters, 2023, 71(4): 1-13.(SCI, 二區, IF: 3.2)

9. Yunhai Liu*, Hu Zhang, et al. Probing tribological properties of DLC film deposited on plunger surface of sucker-rod pump based on molecular dynamics simulation[J]. Applied Physics A, 2023, 129(8): 599.(SCI, 二區, IF:2.7)

10. Yunhai Liu*, Hu Zhang, et al. Exploring the Key Mechanism of Superlubricity Behavior of DLC Film in Vacuum Environment Based on First-Principles Calculations and Molecular Dynamics Simulation[J]. Tribology Letters, 2023, 71(4): 113.(SCI, 二區, IF: 3.2)

11. Yunhai Liu*, Penghui Xu, et al. Probing the tribological behaviors of a-C films in CO₂ environment based on ReaxFF molecular dynamics simulation[J]. Computational Materials Science 234 (2024) 112776.(SCI, 三區, IF: 3.3)

12. Yunhai Liu*, Benteng Che, et al. Exploring the effects of temperature on the mechanical properties of high-entropy alloy (CoCrFeNiAl0.1) based on molecular dynamics simulation[J]. Modelling and Simulation in Materials Science and Engineering, 2023, 32(1): 015011.(SCI, 三區, IF: 1.8)

13. Yiyao Luo, Xiaohua Zhu*, Yunhai Liu*, et al. Effect of oil-based drilling fluid on the evolution of friction interface: A reactive molecular dynamics study at different temperatures[J]. Tribology International, 2023, 188: 108820.(SCI, 一區, IF:6.2)

14. Xiaohua Zhu*, Yiyao Luo, Yunhai Liu*, et al. Friction behaviour and mechanism of aC films in hydrogen, nitrogen, and oxygen atmospheres: Insights from reactive molecular dynamics[J]. Journal of Molecular Liquids, 2023, 386: 122559.(SCI, 一區, IF: 6)

15. Xiaohua Zhu*, Yiyao Luo, Yunhai Liu*, et al. Interfacial Friction Evolution in an Oil-Based Drilling Fluid Environment: An Atomic Understanding from ReaxFF Simulations[J]. Tribology Letters, 2023, 71(3): 76.(SCI, 二區, IF: 3.2)

16. Xiaohua Zhu*, Yiyao Luo, Yunhai Liu*, et al. Understanding the Effect of Oil-Based Lubricants on the Tribological Behavior of Fe–Cr Alloys from Reactive Molecular Dynamics[J]. Langmuir, 2023, 39(14): 5145-5155.(SCI, 二區, IF: 3.9)

17. Xiaohua Zhu*, Xiaowen Wang, Yunhai Liu*, et al. Probing the Effect of Cuttings Particle Size on the Friction and Wear Mechanism at the Casing Friction Interface: A Molecular Dynamics Study[J]. Langmuir, 2023, 39(37): 13386-13398.(SCI, 二區, IF: 3.9)

18. Xiaohua Zhu*, Xiaowen Wang, Yunhai Liu*, et al. Effect of the Graphitization Mechanism on the Friction and Wear Behavior of DLC Films Based on Molecular Dynamics Simulations[J]. Langmuir, 2023, 39(5): 1905-1913.(SCI, 二區, IF: 3.9)

19. Xiaohua Zhu*, Jiangmiao Shi, Yunhai Liu*, et al. Study on formation mechanism of serrated chip of Ti-6Al-4V titanium alloy based on shear slip theory[J]. The International Journal of Advanced Manufacturing Technology, 2022, 122(3-4): 1353-1365.(SCI, 二區, IF: 3.4)

20. Xiaohua Zhu*, Jiangmiao Shi, Yunhai Liu*. Effect of Declination Angle on the Side Milling Process of Ti6Al4V by a New Three-Dimensional Milling Finite Element Model[J]. Journal of Materials Engineering and Performance, 2023: 1-10.(SCI, 三區, IF: 2.3)

代表性科研項目

部分縱向項目:

1. 國家自然科學基金青年基金項目，2022~2024，主持

2. 中國博士后科學基金特別資助（站前），2020~2023，主持

3. 中國博士后科學基金面上資助，2021~2023，主持

4. 四川省自然科學基金青年項目，2022-2023，主持

5. 國家自然科學基金重點項目，2021-2025，主研

6. 國家重點基礎研究發展計劃（973計劃），2015~2020，主研

部分橫向項目:

1. 178mm井下電控分流循環工具，企業項目，2024-2025，主持

2. 隨鉆擴眼破巖效率及影響因素實驗測試，企業項目，2024-2025，主研

3. 高溫熔融井下鉆具內切割工具研制，企業項目，2022-2024，主研

4. 關鍵承壓件耐70MPa高壓泥漿沖蝕磨損機理研究，企業項目，2022-2023，主研

5. 井下油套管電動切割工具研發，企業項目，2021-2022，主研

榮譽獎勵

1.管道定向穿越鉆柱動力學特性與失效預防研究及應用, 中國石油和化學工業聯合會, 科技進步獎三等獎, 2016

備注其他

指導學生情況：近幾年來，指導的研究生多次獲得“國家研究生獎學金”、“學業一等獎學金”、“校級優秀畢業生”等榮譽，畢業后進入了成都煙草公司、中海油公司等企業、西安交通大學、華南理工大學等高校深造讀博。

誠摯歡迎熱愛科研，且刻苦好學的機械工程、動力工程及工程熱物理等專業同學報考“鉆井提速”科研團隊研究生。團隊現有教授3人，副教授3人，講師1人。在讀碩博士研究生70余人，已畢業碩博士生80余人。

辦公室：西南石油大學明智樓B201。