Talk:Strain energy density function

Physics Low‑importance

	Physics portal This article is within the scope of WikiProject Physics, a collaborative effort to improve the coverage of Physics on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.PhysicsWikipedia:WikiProject PhysicsTemplate:WikiProject Physicsphysics articles
Low	This article has been rated as Low-importance on the project's importance scale.

Polymers (inactive)

This article is within the scope of WikiProject Polymers, a project which is currently considered to be inactive.PolymersWikipedia:WikiProject PolymersTemplate:WikiProject PolymersPolymers articles

Exclusion of constitutive models' equations[edit]

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)[reply]

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)[reply]

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)[reply]

Classification of this article[edit]

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)[reply]

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)[reply]

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)[reply]

Units[edit]

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

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

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)[reply]