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#1 2017-11-14 18:18:21

alberto
Member
Registered: 2017-04-25
Posts: 4

Is it posible to direct input of stiffness matrix for Timoshenko beam

I've seen that there is an element POU_D_TG that takes into account shear and warping. The input to this element comes from geometrical properties of the section (Ix, Iy, A, etc). I'm trying to model a composite beam that has coupling between bending and torsion; therefore, I need to also input off diagonal values in the stiffness matrix. I have a 6x6 constitutive matrix relating internal efforts and sectional stresses.
Is there any way of directly setting the stiffness matrix in code_aster?
Thank you for your time

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#2 2017-11-16 15:11:27

dbpatankar
Member
From: Roorkee, Uttarakhand, India
Registered: 2010-05-22
Posts: 134

Re: Is it posible to direct input of stiffness matrix for Timoshenko beam

If you have stiffness matrix with you then you can try modelling it as a DIS_TR instead of POU_D_TG. Have a look at K_TR_D_L/K_TR_D_N.

I am not sure if this is what you need.

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#3 2017-11-18 11:52:21

alberto
Member
Registered: 2017-04-25
Posts: 4

Re: Is it posible to direct input of stiffness matrix for Timoshenko beam

That seems a promising alternative. I'll try it out.
Thank you

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