Abaqus normal simulations stresses results vs Substructure stresses results difference?

[owais ahmed]

Hallo everybody,

I have been working on substructure simulation.Firstly i run my simulation just like a normal case and obtained the misses stress results. Secondly i try to validate the simulation by using substructure modelling for that i simulate a subtructure with nodal degree of freedom and then import .sim 4 files to main model one by one after assembling i apply tie contacts in between the substructures.by node to surface contact.after tie contact load is define and simulations is run.But in substructure i am getting the misses stress values 10 times higher than the normal case? Why is this so? i check it by dividing my structures into six parts and ten parts and after apply tie conctact and simulations running.i am getting the results which is misses stresses(pattern is also not the same) 10 times higher than the normal case. Also other pattern of the stress distributions is also not the same which i am getting without substructure modelling? Thank you for any of your responses

 

[FEA way]

Please share some screenshots of the model and results obtained with both approaches. Apart from that, more details regarding the analysis (possibly also input files) will be useful to provide specific help.

 

[owais ahmed]

Like as i described earlier for substructure i divide the whole layer into six parts and i am getting this result that 10 times higher than orignal i am getting these results

.,stresses are 10 times high. also i am setting the substructure setting like

for substructring approach i divide the layer into 6 parts applied degree of freedom like this

.each substructure is joined together like

with tie contacts.finaly the boundary conditions are

. After importing the substructure in step i am setting the conditions like this

but results are higher i dont know why.thanks in advance.