solidworks - catia

[Joel]

I write here because it's about solid works.
I am bringing back some drawings made by a company (especially the chassis of a vehicle) from catia to solid works (the choice of solid works is not random because it allows to communicate with labview and we need to perform simulations and control on the model). they saved it in igs format (so I lost all the parts in catia) but I have the set. I reported in solid works, apart from the heavy load of loading (and I think because they did it as surfaces, but it is not clear to me because it puts so much), feedback of the numerous errors of surfaces, which are not easy to solve, then I asked if someone uses solid motion, know if these errors of surfaces can affect the cinematic in simulations?.
and then a curiosity. I also used femaps, and therefore I am accustomed to the difference (from the structural point of view) to the surface and solid (for the analysis of efforts). the fact of choosing in solid works (but also applies to the casket) of surfaces as geometry does not affect the calculations of the efforts and deformations (this because in the drawings of this company - Berton style - they used surfaces).

 

[SolidUser]

solidworks uses parasolid as a modeling kernel, while catià uses acis.
acis is less accurate than parasolid, in the sense that for him the accuracy with which it considers a closed volume is greater than 0.01, which is that of parasolid.
made this premise, means that in the import options of the igs you have to increase the value with which solidworks considers the surfaces attached to each other and therefore consider it a solid and not a surface.

second solution is to use other interchange formats, which I put you in order of good import:
1) parasolid (log no)
2) acis
3) step

As for your question, solidworks motion needs solids, for the simple reason that cinematics takes into account intrinsic variables you have closed volumes (mass,cog, inertia, etc.)

 

[Joel]

thanks soliduser for the prompt answer, I missed this information. I apologize if I ask you again, but I'm beginning and as this problem I think it will turn out even in the future, I wanted to ask you if you know texts or websites that talk about the types of format (parasolid, igs etc.) of the difference between them etc etc. etc., so you can deepen this question.

 

[SolidUser]

thanks soliduser for the prompt answer, I missed this information. I apologize if I ask you again, but I'm beginning and as this problem I think it will turn out even in the future, I wanted to ask you if you know texts or websites that talk about the types of format (parasolid, igs etc.) of the difference between them etc etc. etc., so you can deepen this question.

wikipedia e google.