V2EX shear-thickening

Shear-thickening

释义 Definition

剪切增稠:一种流变学现象,指材料(常见于悬浮液、浓浆、某些非牛顿流体)在受到更强的剪切作用(如更快搅拌、快速挤压或冲击)时,黏度反而升高、流动性变差的行为。(也常写作 shear thickening;相对现象是 shear-thinning 剪切变稀。)

发音 Pronunciation

/r θkn/

例句 Examples

Stirring the cornstarch mixture faster can cause shear-thickening.
更快地搅拌玉米淀粉混合物会引发剪切增稠现象。

In dense suspensions, shear-thickening can dramatically increase viscosity, which is useful for impact-resistant materials.
在高浓度悬浮液中,剪切增稠会显著提高黏度,这一特性可用于制造抗冲击材料。

词源 Etymology

该词由 shear(剪切)thickening(变稠、增稠) 组合而成,字面意思是“在剪切作用下变稠”。Shear 在物理中指平行方向的相对滑动造成的应力/变形;thicken 源自 thick(厚、稠),表示“变得更稠、更厚”。

相关词 Related Words

文学与著作中的用例 Literary & Notable Works

  • C. W. Macosko, Rheology: Principles, Measurements, and Applications(常用于解释剪切增稠/剪切变稀等非牛顿行为)
  • J. F. Brady & G. Bossis 等相关论文(经典悬浮液流变研究中常讨论 shear thickening 的机理)
  • R. G. Larson, The Structure and Rheology of Complex Fluids(复杂流体结构与流变学中涉及剪切增稠现象)
  • R. B. Bird, R. C. Armstrong & O. Hassager, Dynamics of Polymeric Liquids(在更广义的流变框架下提及不同非牛顿响应,包括剪切相关黏度变化)
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