linear static with contacts
Altair EmployeeI am carrying out a linear static loading of helical spring, which is interfaced between two plates and have defined slide contact between the spring and the plates. Upon applying the load to the top plate i obtained the spcf forces on the bottom plate nodes. However, I am obtaining unexpectedly high loads at the contacts (100 times higher than the loading force~1000). Am i doing something wrong in setting up the contacts?
I am attaching pictures of result, setup and contact surfaces for clarity
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@Prakash Pagadala I have shared the model files with you.
While carrying out the non linear analysis I am unable to obtain a force balance (between contact force and reaction force) on the plates. I tried defining different conditions of contact (slide and stick) however in both the cases i am unable to obtain a force balance. Something seems to be wrong.
I can transfer the file if needed.
I am carrying out a fixed displacement analysis. The reaction force on the bottom plate should be equal and opposite to the contact force experienced by the plate.
But when i obtain the nodal reactions and nodal contact forces they are not balancing each other
Lets take a simple example for explanations sake.
If a plate is pushed onto another plate (such that the two plates are in contact). How can i find the force transferred at the contact regions?
Hi prakash,
Hope you doing well
Here i am need reaction force at constrained location but i unable to get the force it showing zero i defined all the parameters. Can you please check the model once for me .
And please give feedback. Thanks for your time. i have attached the model as shown below.
hi Prakash,
Hope you doing well. i am trying to do analysis on enforced displacement with friction contact between the contacts. but the top component is penetrating i have changed the parameters but i unable to get the solution. Please take a look once to the file.
thanks for you support.
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Actually i have created a load bar that is connected with the RBE2 elements. So i have applied the load at the RBE2 element so that the load will be distributed through the load bar part.The things is the contact between the Load bar and part is working and the contact between the bottom support and the part is not working.
Hi @Prakash Pagadala Do you have any update on this model ?
Hi Prakash,
The analysis is proper now. Thanks for your support.
During the analysis i have faced the convergence issue but automatically i has rectified. How the convergence factor works here in optistrct since generally in Ls-dyna implicit analysis once the convergence error comes it is very difficult to get the solution right. so how does the convergence in optistrct differ from the ls dyna convergence ?
Hi @RahulDeshmukh
Can you share the model file please?
use the dropbox link in my signature below to share the model file.