COMSOL Forums: stiffness

Re: stiffness

Mon, 15 Mar 2010 10:03:43 +0000

Hi Ivar,

Yes it is what I'm looking for..

before I used prescribed dislacement and calculated reaction force...
but I don't sure that my way of stiffness calculating is correct.
I will try your's.

Thank you,
Alex

Re: stiffness

Fri, 12 Mar 2010 19:06:35 +0000

Hi Alex

is it the mechanical stifness in [N/m] you are looking for ?

I would take then a stationary sover on the structural mode on your model, load a face with 1 or 1000[N], or a pressureof p[Pa]=F[N]/(Area[m^2]), solve, calculate the average displacement by integrating disp_sm...[m] and dividing by the area and then calculate k[N/m]=F[N]*Area[m^2]/(int(disp_sm...)[m*m^2])

Or is it another varaible you are looking for ?

Good luck
Ivar

stiffness

Fri, 12 Mar 2010 13:48:54 +0000

Hi all,

does anybody know how to calculate the stiffness of a sample in comsol?

plese help me,
Alex