giulio1993
Guest
good morning to all, I would need to apply a force to the center of cutting my geometry (cycling frame) but I have no idea how to find the ct with ansys, could someone give me a hand?
Thank you.
Thank you.
Stan9411
Guest
back to 2016, when I was doing motostudent .... method for calculating the torsion rigidity of a frame of frame? maybe read on “motorcycle dynamics” of cossalter??
Look, we got rid of this imaginary cutting center. the load comes from the pipe, and that's where you have to apply your pair.
a trick that we adopted was to define a reference point that prevented the translation of the duct and allowed only rotations... so the pair actually twisted the frame, without flenching it all on one side (because the constraints are not at the same geometric height of the application point of force.
in any case you will understand by going on in these projects and then starting to work, that when a theory is laconic, you must self-import boundary conditions (of course sense) and work on those doing comparative analysis. It is useless to look for the “right” way of doing this analysis to pull out the absolute number. define a sensible way, allowing you to say: “the x frame is more rigid than the y frame of a z%”. Stop.
Look, we got rid of this imaginary cutting center. the load comes from the pipe, and that's where you have to apply your pair.
a trick that we adopted was to define a reference point that prevented the translation of the duct and allowed only rotations... so the pair actually twisted the frame, without flenching it all on one side (because the constraints are not at the same geometric height of the application point of force.
in any case you will understand by going on in these projects and then starting to work, that when a theory is laconic, you must self-import boundary conditions (of course sense) and work on those doing comparative analysis. It is useless to look for the “right” way of doing this analysis to pull out the absolute number. define a sensible way, allowing you to say: “the x frame is more rigid than the y frame of a z%”. Stop.
giulio1993
Guest
Thank you so much! you took everything in full
by chance you know how to do ansys to give the bond of rigid connection between parts of the same body (I want to rigidly bind the motor attacks of the frame between them to simulate the infinitely rigid behavior of the engine itself)Stan9411
Guest
At the time we had done it .. now at work I no longer have ansys .. maybe on weekend I do a research, even at a distance of years if I see a tutorial of that command I recognize it.
you also intend to do a real test ? we create a counter that reproduced the load and bond conditions of the model.. .
comparison in engine absence was good.
when we put the rigid point in the model and the motor on the true frame, the model overestimated the stiffness .. but of a nice pó ..
see what comes out to you
you also intend to do a real test ? we create a counter that reproduced the load and bond conditions of the model.. .
comparison in engine absence was good.
when we put the rigid point in the model and the motor on the true frame, the model overestimated the stiffness .. but of a nice pó ..
see what comes out to you