Using joint pattern to apply parabolically variable loads

[rdias66]

I have to apply wind pressures to a curved surface, but I'm unsure how to use the two options to apply the load. It would vary parabolically both in the x and z direction along the curved surface. Any ideas?

Thanks

Raquel

 

[Guest262653]

Have you considered using joint forces instead of joint patterns? I have done this for a tall free-standing industrial concrete chimney and the procedure I used was the following:
- export the joint coordinates to excel;
- calculate in excel the forces at each node according to the perimeter and height distributions of the wind pressures;
- import to your sap2000 model a table with the joint load forces (Table: Joint Loads - Force).

I've found this method easier to control the results but you could easily do the same with joint patterns if you import a table of joint pattern values (Table: Joint Pattern Assignments).

Hope it helps.