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Volume 13
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10.3390/app132011580
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Article

Inspired by Earthworms and Leeches: The Effects of Cylindrical Pit Arrays on the Performance of Piston-Cylinder Liner Friction Pairs

by
Tianyu Gao
1,
Hao Chen
1,
Danna Tang
2 and
Yumo Wang
1,*
1
School of Intelligent Manufacturing, Nanjing University of Science and Technology, Nanjing 210094, China
2
School of Mechanical Engineering, Changshu Institude of Technology, Suzhou 215506, China
*
Author to whom correspondence should be addressed.
Appl. Sci. 2023, 13(20), 11580; https://doi.org/10.3390/app132011580
Submission received: 3 October 2023 / Revised: 17 October 2023 / Accepted: 20 October 2023 / Published: 23 October 2023
(This article belongs to the Section Surface Sciences and Technology)
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Abstract

To improve the friction and wear performance of the piston-cylinder liner friction pair, inspired by earthworms and leeches, 27 kinds of pistons with cylindrical pit arrays are designed and processed. Through a friction test, four superior textured pistons are optimized, and wear, life and thermal imaging tests are performed. Finite element analysis of the friction pair model is performed, and the friction and wear mechanisms are discussed. The results show that the pistons with cylindrical pit arrays have excellent friction and wear performance, less heat generation by friction, longer lives and less scratches on the cylinder liner. The temperature of the optimized textured pistons was reduced by around 5–10 °C. The wear amount of some textured pistons was reduced by over 50%, resulting in an improvement in their lifespan of at least 30% or more. The results of the finite element analysis indicate that the textured piston exhibited reduced deformation and favorable stress–strain distribution and satisfied the required contact pressure.
Keywords: bionic inspiration; friction; wear; mud pump; piston; temperature bionic inspiration; friction; wear; mud pump; piston; temperature

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MDPI and ACS Style

Gao, T.; Chen, H.; Tang, D.; Wang, Y. Inspired by Earthworms and Leeches: The Effects of Cylindrical Pit Arrays on the Performance of Piston-Cylinder Liner Friction Pairs. Appl. Sci. 2023, 13, 11580. https://doi.org/10.3390/app132011580

AMA Style

Gao T, Chen H, Tang D, Wang Y. Inspired by Earthworms and Leeches: The Effects of Cylindrical Pit Arrays on the Performance of Piston-Cylinder Liner Friction Pairs. Applied Sciences. 2023; 13(20):11580. https://doi.org/10.3390/app132011580

Chicago/Turabian Style

Gao, Tianyu, Hao Chen, Danna Tang, and Yumo Wang. 2023. "Inspired by Earthworms and Leeches: The Effects of Cylindrical Pit Arrays on the Performance of Piston-Cylinder Liner Friction Pairs" Applied Sciences 13, no. 20: 11580. https://doi.org/10.3390/app132011580

APA Style

Gao, T., Chen, H., Tang, D., & Wang, Y. (2023). Inspired by Earthworms and Leeches: The Effects of Cylindrical Pit Arrays on the Performance of Piston-Cylinder Liner Friction Pairs. Applied Sciences, 13(20), 11580. https://doi.org/10.3390/app132011580

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