Talk:Stress–strain analysis

Combining Stress analysis with Structural analysis?
I suggest that this be combined with Structural analysis. "Stress analysis" is really an old-fasioned way of looking at structural analysis, and should be a redirect to the current version of "Structural analysis", which already makes mention of the pertinent points (as well as the term) of this article. —Preceding unsigned comment added by MQuinn (talk • contribs)


 * The areas do overlap a lot. Stress analysis is one part of structural anlaysis (others includes dynamics, thermal maybe, etc).  The articles could be combined, but they are long enough to stand on their own also.  -Fnlayson 00:28, 18 May 2007 (UTC)


 * The point is Structural analysis is the examination of a structure, and whilst it will generally include stress analysis structural analysis is a process whereas stress analysis is a method. It is similar to saying maths and integration are the same thing because you will invariably use and mention integration in maths - Sam Lacey 14:19, 18 May 2007 (UTC)
 * Yea, yea. Like I said the articles are long enough to stand on their own.  That's not a reason to combine.  I don't see a good reason stated for combining..  -Fnlayson 15:01, 18 May 2007 (UTC)
 * I have to say though I am a little stumped as to really what should go in there seeing as there is already page for finite element modelling, beam bending, stiffness matrices - I was thinking along the lines of neatening up the current page (to bring it inline with the new guidelines), and altering the matrix stuff to go a little deeper, perhaps walkthrough the FEM of a series of elements to demonstrate the point. I dont really think the spring explains it particularly well - Sam Lacey 15:27, 18 May 2007 (UTC)
 * I reworked some parts of this article to remove the FEM details. That's covered on the linked pages. -Fnlayson 16:31, 18 May 2007 (UTC)


 * If, as you have said, stress analysis is a subset of structural analysis, then it would make more sense to leave it as it's own topic so as not to make the structural analysis site unwieldy. In fact, I would remove the duplicate material from the structural analysis site.  Then, the structural analysis site could reference the stress analysis one, using wikipedia in a more efficient manner.

Plain Stresses and strains
An element in plane stresses is subjected to stresses alpha X =-60mpa,alpha y =8mpa and lamda xy=-12mpa.The material is aluminium with modulus of elasticity of E=70GPa and Poisson ratio v= 0.33. Determine the following quantities' a The strains of an element orientad at an angle of 30 degrees b The principal strains c The max and the min shear strains d show the results on skeches of properly oriented element. —Preceding unsigned comment added by 41.29.186.76 (talk) 22:50, 4 May 2011 (UTC)

No Tools mentioned?
Saw this pic - File:Rockwell hardness tester 001.jpg  SChalice  00:22, 24 February 2012 (UTC)

Audience?
I must say that this article has gotten quite out of hand over the years, considering its intended audience. A relatively naïve audience--the one intended for an encyclopedia--would come away from this article not knowing the fundamentals, which is the aim I think and find themselves overwhelmed with jargon. The writing is far too complex, bordering on the show-offy. The basics in each domain should be explained, preferably with some simple examples, eg: a simple cantilever with an end load, the simple notion of a moment and, say, the resulting stresses in a rectangular member--basic strength of materials stuff--is bypassed in favor of abstruse concepts far above the encyclopedic level. Furthermore, since few or no real-world structures lend themselves to 'analytical' solutions, except perhaps trusses, more attention (than just a mention) ought to be paid to practical solutions like finite element, finite difference and the role of computers in solutions as well as other tools that are actually used in stress analysis. How actual forces are guesstimated, say the number of cars on a bridge and the role of standards in this process would be informative. wgoetsch (talk) 01:53, 26 July 2013 (UTC)

I neglected to mention, as does the article, the important and driving role of failures in stress analysis and the resultant changes in standards, what one might term the 'common law' approach in statics and mechanics. wgoetsch (talk) 02:06, 26 July 2013 (UTC)

Singularities
The page says "External forces that are specified as line loads (such as traction) or point loads (such as the weight of a person standing on a roof) introduce singularities in the stress field, and may be introduced by assuming that they are spread over small volume or surface area."

Surely spreading forces over a small volume or surface area, removes singularities rather than introducing them? — Preceding unsigned comment added by 88.97.62.77 (talk) 12:28, 13 May 2017 (UTC)