elastic limit

elastic limit
the greatest stress that can be applied to an elastic body without causing permanent deformation. Also called limit of proportionality, proportional limit.
[1860-65]

* * *

      maximum stress or force per unit area within a solid material that can arise before the onset of permanent deformation. When stresses up to the elastic limit are removed, the material resumes its original size and shape. Stresses beyond the elastic limit cause a material to yield or flow. For such materials the elastic limit marks the end of elastic (elasticity) behaviour and the beginning of plastic (plasticity) behaviour. For most brittle materials, stresses beyond the elastic limit result in fracture with almost no plastic deformation.

      The elastic limit is in principle different from the proportional limit, which marks the end of the kind of elastic behaviour that can be described by Hooke's law, namely, that in which the stress is proportional to the strain (relative deformation) or equivalently that in which the load is proportional to the displacement. The elastic limit nearly coincides with the proportional limit for some elastic materials, so that at times the two are not distinguished; whereas for other materials a region of nonproportional elasticity exists between the two. The proportional limit is the end point of what is called linearly elastic behaviour. See deformation and flow; elasticity.

* * *


Universalium. 2010.

Игры ⚽ Поможем написать курсовую

Look at other dictionaries:

  • Elastic limit — Elastic E*las tic ([ e]*l[a^]s t[i^]k), a. [Formed fr. Gr. elay nein to drive; prob. akin to L. alacer lively, brisk, and E. alacrity: cf. F. [ e]lastique.] 1. Springing back; having a power or inherent property of returning to the form from… …   The Collaborative International Dictionary of English

  • Elastic limit — Limit Lim it (l[i^]m [i^]t), n. [From L. limes, limitis: cf. F. limite; or from E. limit, v. See {Limit}, v. t.] 1. That which terminates, circumscribes, restrains, or confines; the bound, border, or edge; the utmost extent; as, the limit of a… …   The Collaborative International Dictionary of English

  • Elastic limit — Elastic limit. См. Предел упругости. (Источник: «Металлы и сплавы. Справочник.» Под редакцией Ю.П. Солнцева; НПО Профессионал , НПО Мир и семья ; Санкт Петербург, 2003 г.) …   Словарь металлургических терминов

  • elastic limit — tamprumo riba statusas T sritis fizika atitikmenys: angl. elastic limit; limit of elasticity vok. Elastizitätsgrenze, f rus. предел упругости, m pranc. élasticité limite, f; limite d’élasticité, f; limite élastique, f …   Fizikos terminų žodynas

  • elastic limit — noun 1. : the greatest stress that an elastic solid can sustain without undergoing permanent deformation 2. : the greatest stress for which the strain of an elastic body is proportional to the stress …   Useful english dictionary

  • elastic limit — noun Date: 1898 the greatest stress that an elastic solid can sustain without undergoing permanent deformation …   New Collegiate Dictionary

  • elastic limit — the extent to which elastic material may be deformed without impairing its ability to return to original dimensions. Cf. proportional l …   Medical dictionary

  • elastic limit —    The point on a stress/strain curve at which transition from elastic to inelastic behavior takes place …   Lexicon of Cave and Karst Terminology

  • elastic limit — the point beyond which the deformations of a structure or material are no longer purely elastic or, in other words, the greatest stress which a material is capable of sustaining without any permanent strain remaining after complete release of the …   Mechanics glossary

  • elastic limit — The maximum stress that can be applied to a body and the strain will still completely disappear when the stress is removed. Beyond this limit, the body is deformed and does not return to its original shape when the stress is removed …   Aviation dictionary

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”