Scholarlink

<p>Alpine regions pose significant risks to infrastructure and people due to rockfalls. To absorb the kinetic energy of falling rocks, fixed and hinged rockfall fences are used, with the safety net playing a&#xa0;central role in risk minimization. This study investigates the mechanical behavior of so-called Omega nets—a&#xa0;cost-effective and lightweight alternative to conventional ring nets—using an explicit finite element simulation. The geometry and material as well as three specific loading scenarios were analyzed: axial tension on a&#xa0;single strand&#xa0;(A), axial tension on two interwoven strands considering friction and sliding effects&#xa0;(B), and a&#xa0;load perpendicular to the axis to simulate a&#xa0;direct rock impact&#xa0;(C). The force-displacement-curves for all scenarios show elastic strain that quickly transitions into energy-absorbing plastic deformation. Stress peaks occurred primarily at contact and impact points. The results demonstrate the efficiency of Omega nets but also point to potential areas for optimization in material and stress minimization for future research.</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

Numerische Simulation eines Omega-Netzes

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年6月22日

查看全文
  • Emrullah Seferoglu,
  • Jürgen Pfoser

摘要

Alpine regions pose significant risks to infrastructure and people due to rockfalls. To absorb the kinetic energy of falling rocks, fixed and hinged rockfall fences are used, with the safety net playing a central role in risk minimization. This study investigates the mechanical behavior of so-called Omega nets—a cost-effective and lightweight alternative to conventional ring nets—using an explicit finite element simulation. The geometry and material as well as three specific loading scenarios were analyzed: axial tension on a single strand (A), axial tension on two interwoven strands considering friction and sliding effects (B), and a load perpendicular to the axis to simulate a direct rock impact (C). The force-displacement-curves for all scenarios show elastic strain that quickly transitions into energy-absorbing plastic deformation. Stress peaks occurred primarily at contact and impact points. The results demonstrate the efficiency of Omega nets but also point to potential areas for optimization in material and stress minimization for future research.