I develop simple model 1 story structure consist of slab and column only (no beam). Then I apply vertical load on the middle of the slab.
After that I put rigid diaphragm using master slave and run the model. As the result, I got all support reaction at every column is exactly same.
Contrary, when I'm using floor diaphragm, the supports reaction are different for each column. Column near applied point load have higher reaction.
My question, why the result different? Manual said that both method can be used. So, what condition suppose master slave or floor diaphragm to be used?
Thank you for the answer.
1. Well noted
2. The reason such assumption made was the load I got from tank vendor is only Vertical Point Load, Horizontal Point Load and Moment Point Load. Whereas, the actual load supposed to be applied uniform at the base. That's why I applied Master Slave Rigid, to obtain proper behaviour (applied point load but behave similar to if uniform load applied). However, I'm wondering whether it's correct method or not. So, I would like to know your perspective in this matter.
3. Well noted.
Thank you for the feedback.
Yes, I think you can apply the load in that way by using the master/slave specification.
Thank you for the feedback. So much appreciated.