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Thermodynamic theory of polymer elasticity[edit]

Hi, guys, thanks for your contributions regarding the molecular origin of polymer viscoelasticity. This is a very important topic, but I do not believe it belongs to the viscoelasticity article. There are non-polymer materials that exhibit viscoelasticity. Many rubber-like substances can be considered perfectly elastic, etc. Thus, I moved your text to the new article Thermodynamic theory of polymer elasticity. Please work there.

Quasi-linear viscoelasticity[edit]

It would be nice if there was a section on the quasi-linear viscoelasticity. It is a very important topic when talking about the mechanical properties of soft tissues.

Types of viscoelasticity: Volterra equation[edit]

What is called a Volterra equation here might be better discribed as a linear response. Reference to linear response function?

--Benjamin.friedrich 08:44, 14 December 2006 (UTC)

Practical Applications?[edit]

It'd be nice if there was at least a brief section discussing practical applications, so that the novice having no idea what this stuff is could get a sense of it. (I'm such a novice, having seen a sheet of "VISCOELASTIC MATERIAL" in a craft shop and wondered what on earth it was. I still don't know, but the name is cool :-) )

Mattress retailers claim that the latest, coolest type of mattress (and in Brazil they cost as much as FIVE plain foam mattresses) employs a NASA-developed viscoelastic material. In my POV, this is just salesman-talk and I am sure they do not know what they are talking about -- I am sure that "viscoelastic" is just a word they were instructed to memorize; they probably have no idea what it means. But I have tested such mattresses in a store (laid on, sat on, jumped on them) and can attest: as you lay down, initially they resist you. If you keep moving, they will feel stiff-ish. If you stop moving, they start deforming, adapting to the shape of your body. You sink a bit and then they stop. Then it feels like heaven's pillows underneath you. When you rise, at first you see your shape as in a mold and then they come back to their original shape. Cool indeed. SrAtoz (talk) 18:30, 13 May 2008 (UTC) SrAtoz, 13 May 2008.

Reference to anelasticity[edit]

A very nice page, but the reference to anelasticity does not seem to agree with the distinction between anelasticity and linear viscoelasticity made by Nowick and Berry [1]. Specifically, the Wiki page states that "... an anelastic material will NOT fully recover to its original state on the removal of load.", while Table 1-1 of [1] (on p. 3 of [1]) shows that complete recoverability is a requirement of anelasticity. Perhaps the statement could be rewritten as "... an anelastic material must fully recover to its original state on the removal of load."

[1] A.S. Nowick and B.S. Berry, "Anelastic Relaxation in Crystalline Solids" (Academic Press, 1972). Rjhawkins (talk) 00:46, 14 January 2008 (UTC)

Figure with stress-strain curves[edit]

The figure that shows stress-strain curves for a purely elastic and a viscoelastic material from my point of view is misleading. The curve (b) is for an anelastic material, a rare case of viscoelasticity. The more normal type includes creep, hence the strain does not go back to zero. (talk) 09:35, 3 September 2010 (UTC)