How would I find the youngs modulus for wire mesh?

[PaperclipGod]

Other than actually measuring it. Can it be extrapolated from whatever gauge wire the mesh is made up of?

Better yet, do span tables exist for wire mesh?

 

[Triumph]

Young's modulus is a material property, measured from a cylindrically shaped test sample put under a known load, and the change in length is measured. So technically, the young's modulus is whatever it is for the material that the wire mesh is made out of.

Although I don't know what exactly you're looking for, I can infer that you are trying to find some limit to what you can do with a piece of wire mesh, and I don't think that knowing the Young's modulus is going to get you anywhere.

 

[PaperclipGod]

Yeah, that's where I'm getting a bit confused... I'm trying to figure out how "stiff" wire mesh is. Wikipedia seemed to say that stiffness itself itsn't really measurable, but that its young's modulus is a roughly equivalent measurement.

I realize that the youngs modulus is technically applicable only to each individual wire within the mesh, but couldn't you get a decent approximation of its relative strength by treating the entire piece of mesh as a second "test sample"? It's not cylindrical, but wouldn't the difference in relative strength/stiffness between the two samples still be comparable? I mean, if this were done experimentally, it'd basically be the exact same test on two separate objects... all the forces involved should be directly comparable.

Sorry if my description is making this confusing. :/

 

[CLite]

How are you modeling this?

The modulus for the two inplane directions would be equal to the modulus of the wire material. The shear modulus I would probably set to a few hundred for convergence issues if you are using a computer program, just set to zero if you are doing hand calculations. I would set poisson's ratio to zero as well, or a very small number if that creates convergence issues for your software.

The one trick is to be aware of relative cross sectional area, only include the cross section area of the wires running in parallel with a given force.

 

[PaperclipGod]

Whoops, i just noticed that this thread had some replies. On the off chance that any of you check this thread again: What formula should i be using? Could you give me an example using arbitrary variables?