Talk:Elastic modulus

message: "An elastic modulus (also known as modulus of elasticity) is the unit of measurement" - This is wrong. Modulus is not a "unit" (but it can be expressed using some units). "A quantity expressing...", perhaps? "A quantitative property"? Or maybe just "a measure" ? (with some danger of invoking measure theory without a good reason :)  — Preceding unsigned comment added by 76.116.54.148 (talk) 02:52, 15 April 2024 (UTC)
thread_title: "Unit of measurement"???

message: i don't fully understand either topic, but they seem to both be short articles on very similar topics. could do with help from a proper physicist. i say we merge. thoughts? mastodon 15:38, 19 March 2006 (UTC)
replies: text: I don't really think the two are closely related at all, but it's difficult to tell because of the extreme shortness of the Elastica theory.  Ingoolemo talk 23:08, 21 March 2006 (UTC)

text: Completely unrelated. Will expand elastica soon. deeptrivia (talk) 05:02, 29 March 2006 (UTC)
thread_title: Merge from [[elastica theory]]

message: Where does this fit in? It has no entry in Wiki, but Googling it seems to be used in engineering texts. 203.213.7.133 02:03, 20 March 2007 (UTC)
thread_title:  Axial Modulus of Elasticity 

message: quote from Young's modulus:
"In solid mechanics, Young's modulus (E) is a measure of stiffness. It is also known as the Young modulus, modulus of elasticity, elastic modulus or tensile modulus..."
this says that Young's modulus and the elastic modulus are the same thing, but there are different pages on each one. These pages need to be merged if they are the same thing or if not it has to be clarified what is going on. --LeakeyJee (talk) 02:08, 18 April 2008 (UTC)
replies: text: Yes, I agree. This is confusing, especially as "modulus of elasticity" also redirects here, and there is no clear definition on any differences between the two. I don't currently know enough to do much about it, but somebody needs to clarify this or possibly merge the pages. GeiwTeol 00:08, 20 April 2010 (UTC)
replies: text: I've reworked the intro of Young's modulus to explain how Young's modulus is incorrectly called the elastic modulus. Hope this clears up the confusion. Wizard191 (talk) 17:33, 20 April 2010 (UTC)
thread_title:  confusion of two topics 

message: It would be helpful if someone could put a link to the symbol used in the mathematical definition, specifically the equals sign with the letters 'def' above it.  
:\stackrel{\text{def}}{=}\  
Is this shorthand for 'defined as'?  I can't find it in Table of mathematical symbols. Wikid (talk) 06:13, 13 July 2008 (UTC)
replies: text: Yes, it means "is defined as". Wizard191 (talk) 02:37, 20 November 2008 (UTC)
thread_title:  mathematical symbols 

message: I'm currently researching the flexural modulus (which doesn't have an article...quite deterring), however am not well versed with the concept. According to  it is a bending form of the elastic modulus. As such I think it should be added here, but I'm not certain that my source is completely correct. I would like a second opinion before I go and add erroneous info. That source also states there is a torsional modulus, which, if true, should be added as well. Wizard191 (talk) 02:41, 20 November 2008 (UTC)
thread_title:  Flexural modulus 

message: It is written: "Young's modulus (E) describes tensile elasticity, or the tendency of an object to deform along an axis when opposing forces are applied along that axis; it is defined as the ratio of tensile stress to tensile strain." 
For axial compressive load the term Young's modulus is not valid?
Sreerup Banerjee (talk) 19:29, 29 April 2009 (UTC)
thread_title:  Young's modulus for compressive load 

message: "...the tendency of an object's volume to deform when under pressure...."  The volume of an object has no form; it's just the size of a region of space, measured in cubic units.  Shouldn't "deform" be replaced by "change"? Unfree (talk) 20:06, 9 November 2009 (UTC)
replies: text: Quite right; I've attempted to fix the definition. Let me know what you think. Wizard191 (talk) 19:10, 11 November 2009 (UTC)
thread_title:  Deformation of volume 

message: The Poisson's ratio is listed as one of "elastic moduli". Does anybody care about that it's dimensionless? Incnis Mrsi (talk) 09:50, 28 July 2012 (UTC)
thread_title:  Dimensionless vs pressure-dimensional 

message: Why is the definition of the elastic modulus using the symbol for Lamé's first parameter?
Is this the amount the material stretches if something else is keeping it at the same size in the orthogonal direction, or is the material allowed to get thinner?  — Preceding unsigned comment added by 84.243.199.239 (talk) 10:28, 30 January 2015 (UTC)
thread_title:  Confusing 

message: Being accurate, is Young's modulus the hypernym of all the elastic moduli or is a hyponym of elastic modulus? (Hyponymy and hypernymy)
Is Young's modulus the particular screwdriver or the generic tool?
I'm confused. --134.147.45.13 (talk) 16:13, 1 March 2016 (UTC)
thread_title:  Young's modulus: hypernym or hyponym? 

message: The article is inaccurate and misleading.
Example 1: Initially equates the "elastic modulus" with Young's modulus, but later expresses that several elastic moduli exist.
Example 2: The phrase: << The antonym of Elasticity is "Compliance" >> is simply wrong. Compliance is the opposite (the inverse, actually) of stiffness. Elasticity refers to the initial reversible response to mechanical loading of a material, ie to the domain for which the stress tensor at a given point and instant can be (at least approximately) expressed as a function of the strain tensor at the same point and instant, and of this only, and conversely, and the theory that describes it. 
Example 3: The phrase: << The shear modulus is part of the derivation of viscosity >> is very confusing, and inaccurate. The shear modulus of fluids is 0, that's a common first-level definition of a fluid.  
Example 4: The example << Since the strain equals unity for an object whose length has doubled, the elastic modulus equals the stress induced in the material by a doubling of length. While this scenario is not generally realistic because most materials will fail before reaching it, it gives heuristic guidance, because small fractions of the defining load will operate in exactly the same ratio. >> is inadequate, and might confuse readers about the range of application of small-strain theories.
Example 5: <<and one may choose any pair.>> is inaccurate and misleading (non-positive moduli are excluded, for instance).
All in all this article might well do more damage than good, in my opinion. I suggest either deleting or completely rewriting.  — Preceding unsigned comment added by 2001:67C:10EC:52C5:8000:0:0:5B6 (talk) 13:42, 19 October 2016 (UTC)
thread_title:  Article inaccurate 

message: I've redirected the "Chord modulus" stub here, as it was unlikely to ever rate more than a WP:DICTDEF. PianoDan (talk) 21:28, 7 March 2023 (UTC)
thread_title:  Redirected Chord modulus here