Talk:Strain energy density function

Exclusion of constitutive models' equations

I've excluded the constitutive equations, because each of them is completely explained inside its own article. Rudolf Hellmuth (talk) 14:45, 18 July 2010 (UTC)

A far better description of Strain Energy Density is provided at http://www.engineeringarchives.com/les_mom_strainenergydensity.html. The content provided on wikipedia is useless for anyone with intentions of the using the equations in real work. — Preceding unsigned comment added by 130.76.96.152 (talk) 15:18, 15 May 2018 (UTC)

Depends on what "real work" is. We use the definitions in this article extensively in computational mechanics and visual effects. The general case that this article intends to cover requires a lot of background information. Some of that can be found on the "See also" Wikiversity page. I agree that the article needs to be improved. But it hasn't been improved significantly since I wrote the initial drafts some time in 2008. Also, the definition you have cited is useful only for very simple one-dimensional small strain problems. I'd suggest that you edit the https://en.wikipedia.org/wiki/Strain_energy page to incorporate more information on the structural engineering use case. Bbanerje (talk) 22:39, 18 May 2018 (UTC)

Classification of this article

If a physics expert can't be found for this article, it is a topic in materials science/materials engineering undergraduate classes. Maybe a materials person could be found to contribute. — Preceding unsigned comment added by Zeldagamer1337 (talk • contribs) 18:20, 16 April 2011 (UTC)

A typical undergraduate engineering curriculum does not cover any case besides linear isotropic, which is not particularly useful. A good explanation of strain energy density would start with that, but it has to go a lot further. I am a grad student looking for more information on non-linear non-isotropic material models. Those models use strain energy density a lot. Hopefully I will have time to edit this page after I learn something.Marcusyoder (talk) 16:36, 29 January 2015 (UTC)

This is a standard item of engineering mechanics or solids mechanics. The definition is quite simple as an integral of stress versus strain curve as noted in http://www.engineeringarchives.com/les_mom_strainenergydensity.html. The definition on the 2018.05.15 wikipedia page is a useless mess. — Preceding unsigned comment added by 130.76.96.152 (talk) 15:23, 15 May 2018 (UTC)

Units

What are the units of Strain energy density? CrocodilesAreForWimps (talk) 17:00, 17 March 2013 (UTC)

J/m^3, or equivalently sometimes, N/m^2=Pa, since 1 J = 1 N m AresLiam (talk) 00:32, 30 January 2015 (UTC)

The standard American units are in*lbf/in^3, e.g. energy per volume. — Preceding unsigned comment added by 130.76.96.152 (talk) 15:20, 15 May 2018 (UTC)