V2EX failure criterion

Failure Criterion

释义 Definition

failure criterion失效判据 / 破坏准则。指在工程、材料或结构分析中,用来判断材料或构件在何种应力/应变条件下会发生失效(破坏、屈服、断裂等)的规则或标准。(不同领域可能对应不同具体准则,如屈服、断裂或疲劳等。)

发音 Pronunciation (IPA)

/feljr kratrin/

例句 Examples

A failure criterion tells us when a material will break.
失效判据告诉我们材料在什么情况下会断裂。

In finite element analysis, engineers choose a failure criterion to predict whether the component will fail under combined loading.
在有限元分析中,工程师会选择一种失效判据来预测零件在组合载荷作用下是否会失效。

词源 Etymology

failure 来自法语 faillir(“失败、缺失”之意),在工程语境中常引申为“失效、破坏”。criterion 源自希腊语 kritērion(“判断标准”),与“判断、裁决”相关。合起来 failure criterion 字面就是“判断失效的标准/准则”,用于把复杂受力状态转化为可判定的失效条件。

相关词 Related Words

文学与典籍 Literary Works

  • 《Theory of Elasticity》(Timoshenko & Goodier)中在强度与屈服讨论里常涉及“破坏/屈服准则(failure/yield criteria)”的表述。
  • 《Mechanics of Materials》(Beer, Johnston 等)在材料强度章节中经常使用并解释不同的失效判据。
  • 《Roark’s Formulas for Stress and Strain》(Roark & Young)在工程应力计算与设计校核的语境中多次出现相关术语。
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