Constraining spokes for motion simulation 1

[braaten1124]

Hi!

I need some help with constraining the spokes in a bicycle wheel I've made! When I run the simulation, the spokes move all over the place.

Any tips anyone? Here's a link to a .zip with the parts:

http://folk.ntnu.no/simenval/Bicycle_wheel.zip

Thanks in advance!

braaten1124

 

[JohnRBaker]

When you say simulation, are you referring to Motion Simulation or Assembly Sequencing?

John R. Baker, P.E.
Product 'Evangelist'
Product Design Solutions
Siemens PLM Software Inc.
Industry Sector
Cypress, CA

http://www.siemens.com/plm

http://www.plmworld.org/museum/

To an Engineer, the glass is twice as big as it needs to be.

 

[braaten1124]

Motion simulation

 

[JohnRBaker]

Can't help you much there.

John R. Baker, P.E.
Product 'Evangelist'
Product Design Solutions
Siemens PLM Software Inc.
Industry Sector
Cypress, CA

http://www.siemens.com/plm

http://www.plmworld.org/museum/

To an Engineer, the glass is twice as big as it needs to be.

 

[Toost]

May I assume that the wheel should rotate as one piece ?
then the motion simulation of the provided parts is a "one link and one joint simulation" only. - The entire wheel, is one link.

When one starts the Motion Application, it will ask if one wants to convert the assembly constraints into links and joints. In this case = no ( "Cancel") since it is far easier to manually select all pieces of the wheel when defining the link. The fork does not have to be a link, leave it out for the moment and set the joint between the wheel and "nothing". ( do not select anything on the "second link"), It will then be "fixed in space" but allow the wheel to spin.

In case you want to animate a the spokes individually, then they should be links, not else.
I guess that if you want to transfer load data ( such as gravitational forces / brake forces / cornering forces etc ) between Motion simulation and FEM, then the spokes needs to be a link to isolate the data.

Regards,
Tomas