雪落0002
抗拉强度：Ultimate tensile strength (UTS), often shortened to tensile strength (TS) or ultimate strength,[1][2] is the maximum stress that a material can withstand while being stretched or pulled before failing or breaking. Tensile strength is distinct fromcompressive strength.https://en.wikipedia.org/wiki/Ultimate_tensile_strength屈服强度：yield strengthA yield strength or yield point of a material is defined in engineering and materials scienceas the stress at which a material begins to deform plastically. Prior to the yield point the material will deform elastically and will return to its original shape when the applied stress is removed. Once the yield point is passed, some fraction of the deformation will be permanent and non-reversible. In the three-dimensional space of the principal stresses (), an infinite number of yield points form together ayield surface.https://en.wikipedia.org/wiki/Yield_(engineering)延伸率：ductility is a solid material's ability to deform undertensilestress; this is often characterized by the material's ability to be stretched into a wire.https://en.wikipedia.org/wiki/Ductility断面收缩率：The percentage decrease in the cross- sectional area of a tensile test piece caused by wasting or necking of the specimen. It is expressed as a percentage of the original area of the test piece and is a measure of ductility. 在维基百科里面，比例极限，弹性极限，屈服强度，都指向屈服强度（yield strength)
随风思恋
抗拉强度 compressive strengthCompressive strength is the capacity of a material or structure to withstand loads tending to reduce size.屈服强度 yield strengthA yield strength of a material is defined in engineering and materials science as the stress at which a material begins to deform plastically.比例极限 proportionality limit Up to this amount of stress, stress is proportional to strain (Hooke's law), so the stress-strain graph is a straight line, and the gradient will be equal to the elastic modulus of the material.弹性极限 elastic limit Beyond the elastic limit, permanent deformation will occur. The elastic limit is therefore the lowest stress at which permanent deformation can be measured. 延伸率 stretch ratioThe stretch ratio or extension ratio is a measure of the extensional or normal strain of a differential line element, which can be defined at either the undeformed configuration or the deformed configuration. 断面收缩率 shrinkage ratioWhen the material tensioning fracture section decreased, the ratio of cross-sectional area reduced to the original area of the section is called shrinkage ratio.
横竖都是213
屈服强度：yield strength，抗拉强度：tensile strength。
1、屈服强度：yield strength
英 [ji:ld streŋθ] 美 [jild strɛŋkθ]
屈变力，屈服强度，抗屈强度
The results show that the increasing of material yield strength has a great influence on the flange cracking.
结果表明，材料屈服强度的增加对翻边开裂有很大影响。
2、抗拉强度：tensile strength
英 [ˈtensəl streŋθ] 美 [ˈtɛnsəl strɛŋkθ]
n.抗张强度
Its thermal deformation behavior, hardness and tensile strength were determined.
对其耐热形变性能以及硬度和拉伸强度进行了研究。
扩展资料：
抗拉强度的实际意义
1、σb标志韧性金属材料的实际承载能力，但这种承载能力仅限于光滑试样单向拉伸的受载条件，而且韧性材料的σb不能作为设计参数，因为σb对应的应变远非实际使用中所要达到的。
如果材料承受复杂的应力状态，则σb就不代表材料的实际有用强度。由于σb代表实际机件在静拉伸条件下的最大承载能力，且σb易于测定，重现性好，所以是工程上金属材料的重要力学性能标志之一，广泛用作产品规格说明或质量控制指标。
2、对脆性金属材料而言，一旦拉伸力达到最大值，材料便迅速断裂了，所以σb就是脆性材料的断裂强度，用于产品设计，其许用应力便以σb为判据。
3、σ的高低取决于屈服强度和应变硬化指数。在屈服强度一定时，应变硬化指数越大，σb也越高。
4、抗拉强度σb与布氏硬度HBW、疲劳极限之间有一定的经验关系。
