Hello,
Im strugling with a bicycle frame FEA for a while now (please check the pictures below).
After getting over some basic problems like absolute/relative accuracy values to mesh the whole thing, I have no errors during simulation, but unfortunately and probably, I have no convergency either. Solver is stucked at Time Step 1 (so no load), but its 106309 elements and I have slow PC.
So I had to ask myself a question...
Is it even possible to do this in Creo Simulate? (I have seen this job done with Ansys)
The rear wheel should move for about 120 mm before the mechanism reaches equilibrium with spring stiffness I used. (120 mm only because it is a kids bike on 20" wheels)
I know that theres other way around this problem, which I was using the whole developing time and that is: mechanism + "use in structure", however I still want to compute the whole assembly.
I have some other ideas to avoid the movement of a rear axle and usage of idealized spring to get equivalent situation or load.
For example, have head tube fixed, suspension to known compression state with known force at the rear axle and fix pos.of both shock pins. But Im not quite sure if that would be the right way yet.
Any ideas?
Or, is it possible with spring deformation and wheel travel this big, to get some decent results?
I used contact only between bearings inner and outer rings and in some other parallel surfaces (see the picture below). I also used rigid links for the pins where the spring is attached to avoid stress peaks since the spring can be atteched to points only. The rear axle is also defined as rigid as I dont care about stress values there.
THANKS
M.