V2EX elastic limit

Elastic Limit

释义 Definition

elastic limit(弹性极限):材料在受力变形后,仍能完全恢复原状(卸载后不留下永久变形)的最大应力或对应的应变范围。超过弹性极限就会进入塑性变形阶段,可能产生永久变形。(在工程中也常与 yield point / yield strength 一起讨论,但并不总是完全等同。)

发音 Pronunciation (IPA)

/lstk lmt/

例句 Examples

The wire was stretched beyond its elastic limit.
这根金属丝被拉伸到超过了它的弹性极限。

To prevent permanent deformation, the design keeps the maximum stress well below the elastic limit under repeated loading.
为避免产生永久变形,这个设计在反复载荷作用下把最大应力控制在远低于弹性极限的范围内。

词源 Etymology

elastic 来自希腊语 elastos,意为“可拉伸的、能回弹的”;limit 来自拉丁语 limes,意为“界限、边界”。合起来指“材料还能回弹恢复的界限”。

相关词 Related Words

文学与著作中的用例 Literary / Notable Works

  • Strength of Materials(Timoshenko)
  • Mechanics of Materials(Gere & Goodno 等)
  • Materials Science and Engineering: An Introduction(Callister & Rethwisch)
  • ASM Handbook, Volume 1: Properties and Selection: Irons, Steels, and High-Performance Alloys(ASM International)
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