Learning Forum

[Sneha E S]

I have to analyse an RCC beam with two boundary condition - 1.Fixed, 2.Simply supported. I applied a load of 100kN and noted the deformation value and used that value to create a table for cyclic loading. Then added the option displacement and inserted the teable. Where should I apply this displacement, Should i Select a small section and distribute load over that or apply load over the whole upper face?

[dlooman]

It's not obvious why you would want to use the displacements for the cyclic load.  Perhaps because it's easier to get convergence?  Why not just apply the 100kN cyclically?  Are you attempting to analysis progressive damage of the beam over time?  

[Sneha E S]

I dont know how to directly apply cyclic loading, when i referred to certain videos, they suggested to use displacement to provide cyclic loading. How to apply 100kN cyclically, is there an option in analysis settings?

[dlooman]

If you want the steady state response to a long duration cyclic (sinusoidal) loading you can do a harmonic analysis and simply specify the frequency of the cyclic loading in Hz. 

[Sneha E S]

Can you explain how to do that, I am not really familiar with ansys . How to do harmonic analysis?

[dlooman]

If you are using Workbench (as opposed to APDL input), you would drag and drop a Harmonic Response System from the Toolbox onto the Project Schematic.  In APDL you would issue the commands ANTYPE,HARM and HARF,,Freq where Freq is the frequency of the cyclic loading.