V2EX yield stress

Yield Stress

Definition / 定义

“屈服应力”:材料在受力时从弹性变形开始转入塑性变形(卸载后不能完全恢复原状)所对应的应力值。常用于材料力学与工程设计中。(也常写作 yield strength,相关但不完全等同,取决于标准与测定方法。)

Pronunciation / 发音

/jild strs/

Examples / 例句

The steel has a high yield stress.
这种钢的屈服应力很高。

When the applied stress exceeds the yield stress, the material deforms permanently, which can compromise the safety of the structure.
当施加的应力超过屈服应力时,材料会发生永久变形,从而可能降低结构的安全性。

Etymology / 词源

Yield 原意与“给出、让步”有关,后来引申为“在压力下屈服、让开”;Stress 源自表示“拉紧、紧绷”的词根,近代在工程与物理语境中专指“应力”。合起来 yield stress 直观表达为“发生屈服时的应力”。

Related Words / 相关词

Literary Works / 文学作品

  • Materials Science and Engineering: An Introduction(Callister)
  • Mechanical Metallurgy(Dieter)
  • Mechanics of Materials(Gere & Timoshenko)
  • Theory of Elasticity(Timoshenko & Goodier)
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