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## Calculting Young's modulus of a complex shape using Comsol

Hi,

Do you know whether one can calculate Young's modulus of a complex shape using Comsol?

Thanks,

Amit

5 Replies Last Post 2010年3月14日 GMT-4 16:23

Hi,

Do you know whether one can calculate Young's modulus of a complex shape using Comsol?

Thanks,

Amit

Sorry, I meant the spring constant of a material assuming it has a homgeneous Young's constant

Hi

from my understanding the Young modulus remains a material property that is linked to the stiffness and the inertia of the part, no ?

So if you have the geometry, the density and experimental values for the siffness under known load conditions you should be able to recalculate back (via anoptimisation or a series of parametric sweep solving and the old "abaque" way) to estimate the material Young modulus.

But you must also assume your model is correct and all "important" terms are included

Good luck
Ivar

Hi

if it's the stiffness "k[N/m]" you want, then it is straightforward, provided you have correct material data: E, nu, rho, the geometry and the load boundary case:

you load with an Applied force such as 1 or 1000[N] and you calcualte the average displacements of your interface, then

k[N/m] = (Applied_force [N]) / average(dz [m])

Good luck
Ivar

you load with an Applied force such as 1 or 1000[N] and you calcualte the average displacements of your interface, then

k[N/m] = (Applied_force [N]) / average(dz [m])

Calculate with which module/submodule? I can draw the shape using Inventor, for example, and import it into Comsol. Then, which module do I use?

Thanks,

Amit