How did you define the no penetration contact?
going to be a challenging analysis but like shaun says, how did you define your no penetration contact set?
The no penetration contact is defined in a different configuration.
In that configuration i made the lower rails thicker so both the rails touch and then defined a no penetration contact on the touching surfaces.
This however didn't make any changes in the result.
I am using a solidworks 2014 student license.
The dropbox link included here contains my model, i couldn't find how to attach a file on this forum.
Please let me know if the link works, and if it doesn't could someone tell me how to attach a zip file?
The complete assembly used for simulation is called New_simulation_assy_JR
In my model there are different configurations and a few simulations.
The simulation i have had the problem with is called Large displacement. (so no contact between the rails.)
Contact between the rails is allowed, since in real life the two parts slide over each other.
It takes my laptop around 30 minutes to run, probably due to the huge displacement occuring in the simulation.
The solution i eventually used is called rails 1 part, where i just made the rails from 1 part.
This simulation only takes about 3-5 minutes to run.
This is of course not the ideal (realistic) situation so any feedback on how to improve the accuracy of my simulation is more than welcome!
The other studies (extra plate, both forces and attach to seatbracket) are steps to reduce the stress in the model.
i haven't had a chance to look at your files but have you had success with no penetration in other files? ie does the method you're using to define no penetration normally work and do you have the right workflow for doing it?
with no penetration if you are using contact sets, it doesn't matter if they are touching or not at the start of the analysis, this is only important for global contact, then it is only applied to faces that are touching
i am using no penetration contact for all the parts that are bolted together (using bolt connectors) so there the contact sets functions of course.
However when there is no connection between two parts i don't know how to "tell" solidworks to make those part interact with each other.
it's a bit difficult to explain i hope the model shows wat i mean more clearly.
for parts that aren't touching, you use contact sets.
component and global contact are for faces that are in touch with each other.