Anne93
Structural
- Jan 20, 2023
- 1
Hello all,
I am modelling a Timoshenko beam in Abaqus with also an axial load.
Therefore, I also include second-order effects.
I am not sure whether I include both the shear deformation and second-order effect in a correct way.
On the internet I found that I have to use a B21 beam element for Timoshenko beams.
For second-order effects I have to include the nonlinear effects of large displacements (switched on at the step settings).
I also switched the beam element to B22, but that does not make a difference.
However, I have the feeling that the definition of to include shear is not correct. This is because I checked a Timoshenko beam with only a q-load (so without axial load) and this gives also the wrong result compared to the hand calculation.
On the internet, I found that also a transverse shear stiffness can be defined.
How does this work? What are the K13 and K23? And how do I know the Slenderness Compensation Factor?
I thought that the transverse shear stiffness is just G*A, but maybe I am wrong?
Or do I do something else wrong regarding including the shear?
Attached to this thread I uploaded the abaqus file. Here, I also made a model of an Euler beam with second order effects, and this one is exactly correct with the theory. Therefore, I also think that the addition of shear gives the problem.
I am modelling a Timoshenko beam in Abaqus with also an axial load.
Therefore, I also include second-order effects.
I am not sure whether I include both the shear deformation and second-order effect in a correct way.
On the internet I found that I have to use a B21 beam element for Timoshenko beams.
For second-order effects I have to include the nonlinear effects of large displacements (switched on at the step settings).
I also switched the beam element to B22, but that does not make a difference.
However, I have the feeling that the definition of to include shear is not correct. This is because I checked a Timoshenko beam with only a q-load (so without axial load) and this gives also the wrong result compared to the hand calculation.
On the internet, I found that also a transverse shear stiffness can be defined.
How does this work? What are the K13 and K23? And how do I know the Slenderness Compensation Factor?
I thought that the transverse shear stiffness is just G*A, but maybe I am wrong?
Or do I do something else wrong regarding including the shear?
Attached to this thread I uploaded the abaqus file. Here, I also made a model of an Euler beam with second order effects, and this one is exactly correct with the theory. Therefore, I also think that the addition of shear gives the problem.