how deal with following problem

xgx · Post by **xgx** » Mon Oct 09, 2023 5:09 am

Dear STKO, can you give me some advice to deal with the problem as following pictures. Thanks

STKO Team · Post by **STKO Team** » Mon Oct 09, 2023 9:43 am

It's saying that the model is singular. Double check your boundary conditions

xgx · Post by **xgx** » Mon Oct 09, 2023 9:50 am

STKO Team wrote: ↑
Mon Oct 09, 2023 9:43 am
It's saying that the model is singular. Double check your boundary conditions

Oh, thank you very much, you are so patient. Best wishes to you.
xgx

xgx · Post by **xgx** » Mon Oct 09, 2023 10:18 am

STKO Team wrote: ↑
Mon Oct 09, 2023 9:43 am
It's saying that the model is singular. Double check your boundary conditions

Sorry sir, but I can't understand why the model is singular. The boundary condition is as following pictures. Did I make some mistakes?

STKO Team · Post by **STKO Team** » Tue Oct 10, 2023 8:10 am

The master node of the rigid diaphragms has 6 DOFs, but only 3 are constrained to the diaphragm (Ux, Uy, Rz).
So you have to fix the other 3

asdeasoft.net