Scholarlink

<p>Friction between solids and ice is a complex, multiscale phenomenon influenced by factors such as surface geometry, mechanical parameters, and ambient conditions. However, the combined effects of macro-, micro-, and nano-scale geometry on ice friction remain insufficiently quantified. This study systematically investigates the impact of surface curvature and roughness on the coefficient of friction between stainless steel and ice. Controlled modifications were introduced to cross-section radius (7–16&#xa0;mm), longitudinal radius (3–8&#xa0;m), and surface roughness (Sa 0.02–0.17&#xa0;µm), spanning geometry scales from metres to nanometres. Friction tests were conducted using a 13.7&#xa0;m long tribometer at two ambient conditions: “cold” (− 10&#xa0;°C ice, − 3&#xa0;°C air, 80% RH) and “warm” (− 2&#xa0;°C ice, 2&#xa0;°C air, 83% RH), at two applied loads (300, 600 N) and sliding velocities (2, 4&#xa0;m/s). A multiscale surface characterisation framework was developed to correlate 3D surface geometry with friction results. Results indicate that macro-geometry primarily affects ice friction. By reducing the cross-section radius, the coefficient of friction decreased by up to 35% in cold conditions but increased by 20% in warm conditions, suggesting behaviour consistent with a transition between boundary and hydrodynamic friction regimes. Surface texture modifications (simultaneously affecting amplitude, directionality, and skewness) showed a lower, load-dependent effect (up to 15%), with interpretation complicated by co-variation of multiple texture parameters. The results show that identical geometry modifications can lead to opposite friction trends depending on ambient thermal conditions, consistent with regime-dependent friction behaviour.</p> Graphical Abstract <p></p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Regime-Dependent Effects of Multiscale Geometry on Stainless Steel–Ice Friction

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年7月29日

查看全文
  • Ernests Jansons,
  • Igor Velkavrh,
  • Teemu Lemmettylä,
  • Martins Rubenis,
  • Renars Vitols,
  • Miks Sereiko,
  • Viesturs Lacis,
  • Janis Lungevics

摘要

Friction between solids and ice is a complex, multiscale phenomenon influenced by factors such as surface geometry, mechanical parameters, and ambient conditions. However, the combined effects of macro-, micro-, and nano-scale geometry on ice friction remain insufficiently quantified. This study systematically investigates the impact of surface curvature and roughness on the coefficient of friction between stainless steel and ice. Controlled modifications were introduced to cross-section radius (7–16 mm), longitudinal radius (3–8 m), and surface roughness (Sa 0.02–0.17 µm), spanning geometry scales from metres to nanometres. Friction tests were conducted using a 13.7 m long tribometer at two ambient conditions: “cold” (− 10 °C ice, − 3 °C air, 80% RH) and “warm” (− 2 °C ice, 2 °C air, 83% RH), at two applied loads (300, 600 N) and sliding velocities (2, 4 m/s). A multiscale surface characterisation framework was developed to correlate 3D surface geometry with friction results. Results indicate that macro-geometry primarily affects ice friction. By reducing the cross-section radius, the coefficient of friction decreased by up to 35% in cold conditions but increased by 20% in warm conditions, suggesting behaviour consistent with a transition between boundary and hydrodynamic friction regimes. Surface texture modifications (simultaneously affecting amplitude, directionality, and skewness) showed a lower, load-dependent effect (up to 15%), with interpretation complicated by co-variation of multiple texture parameters. The results show that identical geometry modifications can lead to opposite friction trends depending on ambient thermal conditions, consistent with regime-dependent friction behaviour.

Graphical Abstract