govedoonobrdsko
Structural
- Sep 7, 2009
- 6
Hello all
I need to apply temperature gradient on a bridge, so that upper surface has temp 10 degrees more than the lower surface. I need to do it for a bridge updated as a spine model and as area model as well.
1) For spine model I tried making load case "temp gradient" and loading 3-3 temperature with value 10 on the whole length of bridge and result is several 1000x times less than what I expected. It simply cant be that small.
2) For area model there is no temp gradient so I put on all areas in upper deck "normal" temperature change +5 degrees and on the areas in lower deck -5 degrees, with areas in the middle without any load. It gave some results which are about two thirds of what I expected. This result could possibly be OK (maybe my first estimation is not that good), but somehow I still have doubts if this is the right approach.
If you have any idea, please help.
gracias
I need to apply temperature gradient on a bridge, so that upper surface has temp 10 degrees more than the lower surface. I need to do it for a bridge updated as a spine model and as area model as well.
1) For spine model I tried making load case "temp gradient" and loading 3-3 temperature with value 10 on the whole length of bridge and result is several 1000x times less than what I expected. It simply cant be that small.
2) For area model there is no temp gradient so I put on all areas in upper deck "normal" temperature change +5 degrees and on the areas in lower deck -5 degrees, with areas in the middle without any load. It gave some results which are about two thirds of what I expected. This result could possibly be OK (maybe my first estimation is not that good), but somehow I still have doubts if this is the right approach.
If you have any idea, please help.
gracias