FEA ANALYSIS SOLDWORKS BIG VALUES IN DISPLACEMENTS

[Saver2008]

Hi!

I´m performing some static analysis on SOLIDWORKS SIMULATION but I have the following problem:

1.- The item is a section of a vessel and is going to be only under internal pressure. The problem I have is that if I use ASTM A36 (material precharged in solidworks library) I have results that are credible, however, when I change the material with SA-516-GRADE 60 (I had to add a new material)the results are exagerated. There is a warning about big values in displacements and so on. I let the machine finish the analysis and the displacements are more than 300mm. This only happens with the material I added and not with A36 precharged in solidworks material.

I checked the values of SA-516-60 but I did not find anything wrong....what do you think about it?

Thanks
RS

 

[FEA way]

What are the properties of that material (especially Young’s modulus) and how much do they differ from the ones of the built-in material under consideration ? Are you sure thay they are correct (e.g. there’s no missing zero or incorrectly placed decimal separator) ? What are the boundary conditions ?