calculation pulley pro/mech

[GioB]

Bye to all,

I would have a problem on the structural calculation of a pulley with pro/mech and I ask for a courtesy vs. opinion/choice.

on the external track portion on which the belt acts I applied a pressure load that simulates the strap shooting and this naturally did not give problems. I would like to apply a couple that simulates acceleration/deceleration due to the reverse of the bike; if I apply to the same portion of the external track mentioned above a moment during the calculation I get a warning message like:

the moment component of a specified load will have no effect because the surface to which it is applied not associated with any shells.

I ask you at this point based on vs. experiences which is the best option to overcome the problem.

Thank you 1000 for your help.
Thursday

 

[Matteo]

is not a problem of prom, but a common problem to the application of couples in any fem system.

a couple applied to a surface does not make sense once they are returned to the nodes (resulting zero, effects only "mathematic" on the nodes). the pair must be applied to a point in turn bound (link "rigid" or "heavy", or other connection) to the surface.