I have a question regarding the convergence problems of cyclic (quasi-static) loading for reinforced concrete slab-column connection. Is there any of you have this kind of convergence problem? I have run exactly the same model for the monotonic lateral loading and it was totally fine and gave an adequate result. However, when I change the load into cyclic then it start to diverge even for a very low drift level. I have checked all of the boundary condition and it seems totally fine.
In such type of problems, I think you can try the displacement control criteria, stress and force criteria is not suitable for such type of problems.
If nothing helps the explicit formulation of the problem will definitely help.
Which software are you using and what are you trying to model? There might be various reasons for loss of convergence in case of cyclic loading. Inappropriate time step for integration is one of the major causes. You may try to run the analysis with smaller step size. However, the first thing is to check whether the input is in accordance with the assumptions and requirements of the software being used and problem being solved. All the best
@Sharma, I agree with Dr. Sharma that time step influence the convergence in problems involving time such as seismic forces, explosive loading etc.
- Badges
- Science method
- Similar topics
- Biological Science
- Ecology