V2EX torsional strain

Torsional Strain

释义 Definition

扭转应变:材料在扭矩(使物体发生扭转的力矩)作用下,沿长度方向产生的剪切变形程度的量化描述。常用于材料力学与结构工程中(在许多基础情境下可近似理解为“单位长度的扭转变形/剪切变形”)。
(相关但不同:torsional stress 指“扭转应力/剪应力”,是力的强度;strain 指变形的程度。)

发音 Pronunciation

/trnl stren/

例句 Examples

The shaft showed torsional strain under heavy load.
轴在重载下出现了扭转应变。

Engineers measured torsional strain along the drive shaft to predict fatigue failure and improve the design.
工程师沿传动轴测量扭转应变,以预测疲劳失效并改进设计。

词源 Etymology

torsional 来自 torsion(扭转),词根与拉丁语 torquere(“扭、拧、转动”)有关;strain 源自古法语 estreindre(“拉紧、使受力”),引申为“受力后的变形/应变”。组合起来即“由扭转引起的应变”。

相关词 Related Words

文学与著作中的用例 Literary Works

  • Mechanics of Materials(Beer, Johnston 等,常见教材版本):在“轴的扭转”章节中讨论扭转应变与剪切应力、扭转角之间的关系。
  • Strength of Materials(Timoshenko):在材料力学经典论述中用于分析圆轴扭转、剪切变形与材料响应。
  • Roark’s Formulas for Stress and Strain:在扭转与应变/应力公式条目中作为关键术语出现。
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