How to simulate pivoting joints in FEA stress analysis

[eedmondsHRMXH]

I'm designing a hook-like mechanism, where dog bone linkages are moved by a cylinder. Since the cylinders stroke is too long, I created a stop block (highlighted blue). 

I want to know how much stress is going to be applied and where to these dog bones when the cylinder keeps trying to push up. Ideally, this stop block, along with the mechanism, would be able to withstand this force from the cylinder (13.12 Tonnes).

I set it up as seen in the picture, replacing the cylinder model with a force being applied to the pin pushing up at 128663N. I put a pin constraint on every pin. When I ran this, it didn't turn out as expected.

How can I realistically simulate this to see if this stop block is effective for the setup?

[JoshuaNAM]

Have you checked your display amplification settings of the deformation? It looks as a too large deformation.

Your mesh settings seem to be a bit rough as well. Refine this to a finer mesh.

Kind regards,

Joshua

[swalton]

Pin constraints are designed to lock a cylindrical surface to ground.  They are not designed to transmit motion or force between members.

I'd look at simulating the motion in Dynamic Simulation, then exporting peak motion loads to FEAs of individual parts/weldments.

See: https://help.autodesk.com/view/INVNTOR/2023/ENU/?guid=GUID-E3590A08-1082-4FDA-BBC8-DA6D83772168

Inventor Nastran has additional constraints and contacts.  You may be able to get better simulations using that package. 

See: https://www.autodesk.com/support/technical/article/caas/sfdcarticles/sfdcarticles/How-to-create-a-pi...

Or

https://forums.autodesk.com/t5/inventor-nastran-forum/simulating-pinned-connection-nastran-in-cad/td...

[JoshuaNAM]

If I recall it correctly you can give the pin constraints some degrees of freedom to be able to simulate a hinge function.

https://help.autodesk.com/view/INVNTOR/2023/ENU/?guid=GUID-2E36EC5A-8C83-43F0-A58E-41744C5325A0