Stress functions? 3

[daftdave11]

hello

Could anyone help me in understanding the methods of formulation of stress functions of various order? anyone got any helpful links on the topic? ie example of stress functions etc? my knowledge of the topic is quiet basic and could use some help. thanks in advance!!

 

[rb1957]

this sounds awfully general ... could you give a "for instance", or am i missing something ?

 

[pennpiper]

The OP here sounds like another Student.

 

[ZeroExperience]

You may want to start reading the great works of Timoshenko.

You can also refer to any Mechanics Of Materials textbook and that should inform you very well into the stresses in simple loading scenarios.

 

[chicopee]

A course in Machine Design should help. Also check out the Internet.

 

[dvd]

If one has some familiarity with the topic, a book like Schaum's Outline of Continuum Mechanics may be of some use. Is the difficulty with the mathematics? ... or the physics?

 

[Andries]

Timoshenko& Goodier: Theory of Elasticity has a good chapter on stress functions.
You must be aware that their application is limited to fairly simple geometries.

Andries

 

[dhengr]

I’m getting all stressed out from all these here functions and questions. I just don’t need no more stressful functions. So would you please stop talking and writing about these stuffs? It’s just not fair, I already gots three books, and now you guys wants me gettin more. Where will it all end? The whole thing is getting absolutely anisotropic and biharmonic, and is really straining my energy. There is absolutely no compatibility here, and my modulus of resilience is quickly reaching its ultimate level.

 

[btrueblood]

dh, sounds like you've already yielded. Apply some stress relief, preferrably in liquid form (bottles, cans, or from a tap), my doctor prescribes pints, apply as needed until desired relief is found. Just be careful you don't overdo it, or you'll be a-kneelin'.

 

[dhengr]

Btrue:
Yielded? Hell, I just had a plastic moment. If you’re messin with my ‘a-kneelin,’ you better watch my temper.

 

[rb1957]

look out, his dislocations are aligning ...

 

[btrueblood]

Don't keep straining yerself, dh, you'll end up getting fatigued. Man, some people can really ratchet things up, they keep letting themselves get overheated in these debates.

 

[rb1957]

of course "functions" also means a meeting/dinner ...

so how about a pub function ?

 

[btrueblood]

I like a pub that functions. Move that we discuss this there, although perhaps potential flow, viscosity vs. two-phase flow, and such like fluid dynamics functions would be better topics than stress functions.

 

[rb1957]

or maybe how wings create lift ?

and whether pigs have wings ?

 

[btrueblood]

Nah, too technical, unless the pub owner allows paper airplane flights.

 

[dhengr]

At a pub, wings is for eatin, maybe for a lift of sorts, but not the funny/dumb kind of lift rb1957 is talkin bout. Them is chicken wings, most everbody knows that, ceptin some Aero guys. Rb, if ya can’t talk and think nice, ya ain’t gona be invited. But, pigs can slide; them little sausages in hot sauce, on a toothpick is good, and they do slide down your gullet quite nicely. Potential flow of our favorite stress relievers is all important, not too viscous tho, just free fowin. Now we’re talking about visco-elasticity, why bring that up? And, now Btrue is suggestin that I git more books again, on fluid dynamics, and the like, just so I can have a drink, and that we should move this to the Computational Fluid Dynamics forum. Pretty soon he’ll be talkin bout usin FEA (Frickin Engineers Adrift) to tackle this problem, when all I want is a Martini. Now I’m gettin all stressed out again..., my boundary layer is really gettin turbolent, talk about heated-up over a topic, it’s gettin super critical, and I don’t know whether to talk with Froude or Freud about my number, and I think someone’s tryin to stuff somethin up my vortex. What a mess this O.P’er. started, with his obtuse question about functions that stress you out, and he seems to have gone into hiding, or at least left the bldg., since he hasn’t come back to either of his posts.

If you want to read something funny, look up the book “The Stress Analysis of the Strapless Evening Gown.” A compilation of crazy engineering speak and analysis. How do those cantilevers really work, and why are some of us so interested in them?

 

[btrueblood]

Seriously, if the OP stepped out, he's in for some stress himself, as he left his card, and I vote he pays the tab for these here stress relievers.

I have seen that article, dh, in the JIR I think. It's not just the cantilevers themselves, though, it's the harmonic motions that they sometimes describe...and...what were we talking about again?