Stress - Revision history

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	When a material is subjected to '''stress''' it will deform in some way ''(e.g. be stretched or squashed)'' - although for many materials this may be only by a microscopically small amount. The resulting deformation is known as '''[[Strain]]''' and dividing '''Stress''' by '''[[Strain]]''' provides a measure of the [https://en.wikipedia.org/wiki/Elastic_modulus '''stiffness'''] of the material known as its '''[[Young's Modulus]]'''		When a material is subjected to '''stress''' it will deform in some way ''(e.g. be stretched or squashed)'' - although for many materials this may be only by a microscopically small amount. Even a seemingly solid material is made of atoms and molecules which are held together by chemical bonds. This can be [[Models and Modelling\|modelled]] with beads and springs as shown. As the material is stressed the bonds become deformed.


			The resulting deformation is known as '''[[Strain]]''' and dividing '''Stress''' by '''[[Strain]]''' provides a measure of the [https://en.wikipedia.org/wiki/Elastic_modulus '''stiffness'''] of the material known as its '''[[Young's Modulus]]'''

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2015-12-24T13:50:48Z

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← Older revision		Revision as of 13:50, 24 December 2015
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	In engineering, [https://en.wikipedia.org/wiki/Stress_%28mechanics%29 '''Stress'''] is a measure of the load applied for each unit of cross-sectional area of the material under load - i.e. '''Stress = Load / Area''' and is measured in '''[[Newton\|newtons]]''' per square metre ''('''Nm<sup>-2</sup>''')''		[[File:AtomSpringModel.png\|300px\|right]]
			In engineering, [https://en.wikipedia.org/wiki/Stress_%28mechanics%29 '''Stress'''] is a measure of the load applied for each unit of cross-sectional area of the material under load - i.e. '''Stress = Load / Area''' and is measured in '''[[Newton\|newtons]]''' per square metre ''('''Nm<sup>-2</sup>''')''.


			When a material is subjected to '''stress''' it will deform in some way ''(e.g. be stretched or squashed)'' - although for many materials this may be only by a microscopically small amount. The resulting deformation is known as '''[[Strain]]''' and dividing '''Stress''' by '''[[Strain]]''' provides a measure of the [https://en.wikipedia.org/wiki/Elastic_modulus '''stiffness'''] of the material known as its '''[[Young's Modulus]]'''

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2015-12-20T22:02:27Z

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In engineering, [https://en.wikipedia.org/wiki/Stress_%28mechanics%29 '''Stress'''] is a measure of the load applied for each unit of cross-sectional area of the material under load - i.e. '''Stress = Load / Area''' and is measured in '''[[Newton|newtons]]''' per square metre ''('''Nm<sup>-2</sup>''')''

Many terms in engineering, science and mathematics are represented by Greek symbols and '''Stress''' is allocated the symbol '''σ ''(sigma)'''''.

[[Category:Terminology]]