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<p>This study investigates the influence of wire strength, hardness, and surface roughness on the accelerated fatigue performance of metal rubbers. Six types of steel wires were characterized for their surface roughness and mechanical properties. Metal rubbers fabricated via stamping using these wires underwent accelerated fatigue testing, followed by microscopic examination of the wire morphology. The results indicate that metal rubber prepared with low-strength, low-hardness 316–2 wires exhibits a lower specific damping coefficient (0.211), whereas metal rubber made with high-strength, high-hardness SWPB wires demonstrates a higher specific damping coefficient (0.261). Furthermore, metal rubbers fabricated from wires with higher surface roughness, namely SWPB and 316–2, showed mass losses of 1.119% and 1.427%, respectively, significantly exceeding the 0.540% mass loss observed in metal rubber made with smoother 316–1 wires. This disparity is primarily attributed to the formation of shallower abrasion marks (13.5&#xa0;μm) during the fatigue compression of metal rubber made with high-strength, high-hardness wires, which imposes weaker constraints on wire mobility. Conversely, wires with higher surface roughness are prone to developing deeper abrasion marks (31.55&#xa0;μm) during mutual friction, ultimately leading to shortened fatigue life of the metal rubber. This research provides experimental evidence and theoretical support for developing high-damping and fatigue-resistant metal rubbers.</p> Graphical Abstract <p></p>

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The influence mechanism of metal wire properties and surface roughness on the accelerated fatigue behavior of metal rubber

  • 期刊论文

  • 发表日期：

    2026年3月12日

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  • Shuo Dang,
  • Yu Zhang,
  • Zheng Zhang,
  • Yu Zhang,
  • YangLi Liu,
  • Jingyuan Li

摘要

This study investigates the influence of wire strength, hardness, and surface roughness on the accelerated fatigue performance of metal rubbers. Six types of steel wires were characterized for their surface roughness and mechanical properties. Metal rubbers fabricated via stamping using these wires underwent accelerated fatigue testing, followed by microscopic examination of the wire morphology. The results indicate that metal rubber prepared with low-strength, low-hardness 316–2 wires exhibits a lower specific damping coefficient (0.211), whereas metal rubber made with high-strength, high-hardness SWPB wires demonstrates a higher specific damping coefficient (0.261). Furthermore, metal rubbers fabricated from wires with higher surface roughness, namely SWPB and 316–2, showed mass losses of 1.119% and 1.427%, respectively, significantly exceeding the 0.540% mass loss observed in metal rubber made with smoother 316–1 wires. This disparity is primarily attributed to the formation of shallower abrasion marks (13.5 μm) during the fatigue compression of metal rubber made with high-strength, high-hardness wires, which imposes weaker constraints on wire mobility. Conversely, wires with higher surface roughness are prone to developing deeper abrasion marks (31.55 μm) during mutual friction, ultimately leading to shortened fatigue life of the metal rubber. This research provides experimental evidence and theoretical support for developing high-damping and fatigue-resistant metal rubbers.

Graphical Abstract