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Static simulation does not match real life results

Question asked by Jack Morgan on Jan 4, 2018
Latest reply on Jan 4, 2018 by Dustin Perreault

So i am attempting to simulate the applied stresses on a plastic component connected to a fixed metal chain attachment with a bolt.

 

In operation there is a large force which pivots the plastic lug on the chain attachment and generates the crack seen in the image below.

 

I want to re-create this stress in a solid works simulation so i can modify the design of the plastic lug and then repeat the simulation and compare results.

 

However the results on Solidworks do not match. If i use global contact set as bonded there is no displacement visible where the cracks in the lug form. If i use global contact set as allow penetration the lug moves into the chain attachment but no displacement is shown.

 

I have attempted to run a fatigue analysis as in operation the high force is applied many times per minute. However i could not locate any SN cure value for polyurethane or alike.

 

Any help would be greatly appreciated! I'm new to the simulation world.

 

Thanks in anticipation.

 

IMG_5567.JPG

 

Screen Shot 2018-01-04 at 14.50.21.png

Screen Shot 2018-01-04 at 14.42.49.png

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