CIRP Encyclopedia of Production Engineering

2019 Edition
| Editors: Sami Chatti, Luc Laperrière, Gunther Reinhart, Tullio Tolio

Stress, Strain

  • Alan BramleyEmail author
Reference work entry
DOI: https://doi.org/10.1007/978-3-662-53120-4_16690

Synonyms

Definition

A stress is a force F distributed over a flat supporting surface.

Strain is a parameter which describes the relative displacement of particles within a deforming body.

Theory and Application

Stress

A stress is a force F distributed over a flat supporting surface of Area A.

Stress at a point, identified with σ, is given by
$$ \mathrm{limit}\kern0.5em \mathrm{as}\kern0.5em \updelta \mathrm{A}\to 0\kern0.5em \mathrm{of}\kern0.5em \updelta \mathrm{F}/\updelta \mathrm{A}=\mathrm{dF}/\mathrm{dA} $$
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Reference

  1. Ludwig P (1909) Elemente der technologischen Mechanik (Elements of technological mechanics). Springer, Berlin (in German)zbMATHCrossRefGoogle Scholar

Copyright information

© CIRP 2019

Authors and Affiliations

  1. 1.Mechanical EngineeringUniversity of BathBathUK