Hello
I designed a bicycle chassis, recumbent bike type, in SW using the welded construction module and using several profiles that I defined myself. The goal is to be able to do mechanical simulations. I managed to make a correct model and when I go to simulation and it shows me results, 2 beams have disappeared, which distorts the deformations and stresses (at least in this part of the product). Do you have an explanation? Solution?
Thank you
Sylvaine
Hello
In order for people to help you, you would have to share your files.
Cdlt
Hello
I can't share the files, I've signed a confidentiality clause but I can put images. Attached is the structure and the displacements, it is clear that the displacements are greater due to the disappearance of the beam.
Kind regards
I think that if you lose your beams it is because they are not integral to your welded construction
so take back your 3 D
and take a good look at the way in which all the pieces are constrained
The same goes for simulation
@+
Hello
The first big rule to follow if you want to do simulation, do not use the beam mode for your profiles, but transform them into volume.
Moreover, I would like to thank @gt22 (whom I salute for the occasion) on the fact that some elements are not united somewhere. This is because your charge is set on the bottom surface of the part, which no longer appears. The problem reported by @gt22 is located on the rectangular cross-sectional tubes.
That said, there is another bone somewhere because the pieces that no longer appear should have failed the simulation on the grounds of large unrealistic movements.
I therefore suggest that you transform all your parts into volume (in simulation by selecting each part) and then define global contacts that are solidary.
I find the fixed points of your simulation weird but hey it's off topic (well not quite, but that's not the question asked)
Kind regards
Thank you for your answers, I'll try. For the load, indeed there is a miss, I have put myself back on it so many times that I don't know why but indeed, the load is distributed over all the crossbars and it is a weight so downwards. For fixed geometries, it is the connections with the other parts: the fork and the wheel axles. Maybe we need to model differently.
I try to give them news.
Kind regards