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<p>To solve the problem of abnormal abrasion of Cu-Based Friction Materials (CBFMs), Bionic Non-Smooth Surface (BNS) on friction surface of CBFMs was constructed based on bionic principles, and the optimal bionic prototype was selected by Finite Element Method (FEM). In addition, the bionic parameters were optimized by Response Surface Method (RSM). Samples holding BNS were prepared by Laser Processing, tribological properties were tested by a Friction and Wear Tester and worn surface morphology was characterized by a Scanning Electron Microscope (SEM). The results showed that BNS on friction surface could regulate the stress distribution and alleviate the peak stress. Among all samples, the coupled texture of pit-hexagonal got the minimum peak stress. During braking, bionic texture could also collect wear debris or change the motion forms from sliding to rotation, which can reduce abnormal abrasion. The wear rate was reduced by 19.31%. The results in this paper can provide a new idea for enhancing the tribological properties of CBFMs, and can also lay the foundation for further research of bionic tribology.</p>

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Construction of Bionic Non-Smooth Surface of Cu-Based Friction Materials Based on Finite Element Method

  • 期刊论文

  • 发表日期：

    2025年12月5日

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  • Lekai Li,
  • Juxiang Zhu,
  • Zhaohua Yao,
  • Mengting Xing,
  • Yitong Tian,
  • Ma Yunhai

摘要

To solve the problem of abnormal abrasion of Cu-Based Friction Materials (CBFMs), Bionic Non-Smooth Surface (BNS) on friction surface of CBFMs was constructed based on bionic principles, and the optimal bionic prototype was selected by Finite Element Method (FEM). In addition, the bionic parameters were optimized by Response Surface Method (RSM). Samples holding BNS were prepared by Laser Processing, tribological properties were tested by a Friction and Wear Tester and worn surface morphology was characterized by a Scanning Electron Microscope (SEM). The results showed that BNS on friction surface could regulate the stress distribution and alleviate the peak stress. Among all samples, the coupled texture of pit-hexagonal got the minimum peak stress. During braking, bionic texture could also collect wear debris or change the motion forms from sliding to rotation, which can reduce abnormal abrasion. The wear rate was reduced by 19.31%. The results in this paper can provide a new idea for enhancing the tribological properties of CBFMs, and can also lay the foundation for further research of bionic tribology.