topic Forces are not passed to other components in Fusion Design, Validate & Document Forum

Forces are not passed to other components

13118043 — Fri, 18 Mar 2022 02:21:18 GMT

Hi. I am currently working on a linkage project.

This is how i define the assemble joint using as built joint.

When i simulate the design, the force that i applied at the upper linkages did not passed to other linkages, that other linkages just received 0 MPa stress.

Can anyone tell me how to make the forces passed to other linkages? Thank you so much!

Re: Forces are not passed to other components

John_Holtz — Fri, 18 Mar 2022 20:44:43 GMT

Hi @13118043

Did you define contact in the Simulation setup? Joints and other things that position the parts in the Design workspace do not carry over to the simulation workspace.

The next problems will be

What type of analysis are you performing?
Does that analysis type allow the model to be statically unstable? (Hint: Static Stress and Nonlinear Stress do not allow any part of the model to be statically unstable.)
Is any part of the model statically unstable?

John

Re: Forces are not passed to other components

13118043 — Mon, 21 Mar 2022 01:20:33 GMT

Hi @John_Holtz

Thank you for your help. I defined all the contact types and set the automatic contact tolerance to be 3mm. I also applied much bigger forces to see if the forces will be passed to other component or not, but the result still showed that it didn't passed to other components, it passed a little but nearly zero...

I used statistical simulation because i think the structure is stable...

Re: Forces are not passed to other components

John_Holtz — Mon, 21 Mar 2022 13:27:26 GMT

Hi @13118043

It is hard to see in the images, but it looks like some type of constraints (pinned constraints?) are applied to the joints of the model. Constraints connect the model to the ground; they do not define how one component connects to an adjacent component.

Unless the linkage is welded to the ground, meaning some other piece that is not included in the simulation, then the constraints are wrong.

John

Re: Forces are not passed to other components

13118043 — Fri, 03 Feb 2023 01:42:45 GMT

Sorry for the super late reply but it has been resolved. Thank you so much!