Re: 2D model using beam elements

CPE4R is not an axisymetric element ! Use CAX4R elements for concrete 
too !

BenZ.


--- In ABAQUS@xxxxxxxxxxxxxxx, "ravindran_manoharan" 
<ravindran_manoharan@xxxx> wrote:
> 
> 
> Hi All,
> I have managed to construct 2D axisymmetric model (CAX4R) of a 
steel 
> rod embedded in concrete. I am obtaining the natural frequencies of 
> the model. In order to compare the model i have constructed another 
> model 2D planar to use beam elements to model the steel rod since 
> beam elements can't be used in a 2d axisymmetry model. But for some 
> reason the natural frequencies i get from the 2D planar model are 
> way off. The first mode i got from the axisymmetry model is 887Hz 
> (analytical model shows 917Hz) which is quite close but for the 2d 
> planar model the first mode predicted is 10Hz. The elements for the 
> the concrete i have specified as CPE4R (plain strain element).
> 
> Can someone advice me on this? Am i using the wrong element type or 
> something...
> 
> kind regards,
> Ravi





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