Shear Strength modeling using zerolength element

[shivangiitb]

Hello All,

Since nonlinearbeamcolumn element capture only axial and flexural deformation, I modelled zerolength element at column base to capture shear reponse. The spring is able to capture the extra drift/displacement at pier top due to shear and now total deformation is sum of flexural and shear deformation.

The curvature in the beam column element section should remain the same but I am getting different results. Can anyone throw some light on this??

[fmk]

the curvature is only going to remain the same if the relative displacements top and bottom of the beam remain the same. obviously this is not happening.

[aylsworth]

shivangiitb wrote:
> Hello All,
>
> Since nonlinearbeamcolumn element capture only axial and flexural
> deformation, I modelled zerolength element at column base to capture shear
> reponse. The spring is able to capture the extra drift/displacement at pier
> top due to shear and now total deformation is sum of flexural and shear
> deformation.
>
> The curvature in the beam column element section should remain the same but
> I am getting different results. Can anyone throw some light on this??

Hi! I am having hard time in programming my hinge model - axial, shear, and flexure - integrated in a cantilever column subjected to cyclic loading. Can I contact you with regard to your outline of programming? Thanks!

[giovannimilan]

shivangiitb wrote:
> Hello All,
>
> Since nonlinearbeamcolumn element capture only axial and flexural
> deformation, I modelled zerolength element at column base to capture shear
> reponse. The spring is able to capture the extra drift/displacement at pier
> top due to shear and now total deformation is sum of flexural and shear
> deformation.
>
> The curvature in the beam column element section should remain the same but
> I am getting different results. Can anyone throw some light on this??

Have you sorted it out already?

have you set equalDOF for the rotation at the bottom nodes?