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Influence of Slipping Friction on Stress Concentration in Blended Yarns

机译:滑动摩擦对混纺纱应力集中的影响

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摘要

We report the effect of a variable frictional shear force distribution along a slipping broken fiber on the stress concentration (scf) in blended yarns. Our micromechanical model leads to a system of second order differential equations, which we solve using a convenient eigenvector expansion approach. The results for an exponential variation of frictional shear on a slipping fiber, starting from zero at the broken end, are compared to those for a constant friction force. While the extent of the slip region increases by as much as 50% for the exponential variation compared to the constant friction case, the scf changes only slightly, generally decreasing less than 6%. Decreases are smaller when a high elongation fiber is broken than when a low elongation fiber is broken. The hybrid effect in blended yarns, established in previous work, continues to be supported by these new results.
机译:我们报告了沿滑动断裂纤维的可变摩擦剪切力分布对混纺纱中应力集中(scf)的影响。我们的微机械模型导致了一个二阶微分方程组,我们使用方便的特征向量展开方法对其进行求解。将滑移纤维上的摩擦剪切力的指数变化(从断裂端的零开始)与恒定摩擦力的结果进行比较。尽管与恒定摩擦情况相比,滑移区域的范围对于指数变化增加了多达50%,但scf的变化很小,通常减少了不到6%。高伸长率纤维断裂时的减小量比低伸长率纤维断裂时的减小量小。这些新结果继续支持先前工作中确立的混纺纱混合效应。

著录项

  • 来源
    《Textile Research Journal》 |2005年第1期|p.43-49|共7页
  • 作者单位

    Department of Mechanical, Industrial & Manufacturing Engineering, Northeastern University, Boston, Massachusetts 02115, U.S.A.;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 纺织工业、染整工业;
  • 关键词

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