why do you need the elastic support?
can you also link to the previous discussion? i don't remember it
where are you stuck right now with respect to setting up and running the analysis or what challenges are you running into?
what is your goal? do you want to know how it displaces? what is the effect of the embedding that you are trying to account for?
Q 1 Why do you need the elastic support?
Ground or soil is normally simulated as beam on Winkler/elastic foundation considering the stiffness of the soil in three directions, Vertical, lateral and longitudinal (i.e. axial) direction along with the
friction between pipe and soil. Please see attached figure. Please suggest us if not elastic support any other option is available in SOLIDWORKS.
Q 2 Where are you stuck right now with respect to setting up
and running the analysis or what challenges are you running into?
We are stuck while running the study and we get strange
results. Strange results meaning loss of contacts without a reason or in 2015
it automatically excludes the component when I run it.
We are using shell elements for the pipe due to its long
length. We cannot use beam because pipe is having internal pressure.
Q 3 What is your goal ?Do you want to know how it displaces
? what is the effect of embedding you are trying to account for?
Yes our goal is to find stresses and displacements of the pipe. Pipe may sink/embed in ground over the years due to its own weight and as such we have to analyse it In that condition.
Thanks in advance.
he's using nonlinear which is why he doesn't have the soft spring option. however i'm not sure if nonlinear analysis is needed in this case.
Nikhil, i'd guess that your results aren't making sense because you have rigid body motions. And this could be solved with soft springs in a linear analysis.
That being said, looking at your diagram, why not just use springs to setup your analysis? Model a "ground" and then connect your pipe to that ground with springs. It looks like what you have is a standard FE type analysis, just translate it into SWX Simulation.
pipeline is very long.When i define two springs, pipeline will try to bend.so i need to define spring every one meter.and creating cross splitlines just to get a single point will be very lengthy process.I can not create these many split lines.thats why we are looking for some other options.I cant use elastic support on shell thts wht my VAR said.neither can i use virtual wall with shell as we observed that contacts behave randomly.If you see the model i hv attached i used soft spring option in one of its studies.In that L shapped model i dont think there will be rigid body motions.I hv fixed it on d top.defined virtual wall at d bottom.even we have tried it by making both ends fixed.when i run that model with solid elements then it runs fine.d time i use shell with virtual wall it simply explodes d contacts.it seems like using solid element is d only option left.my study gonna take forever to run.but i will find out how much time it may take.
Thanks for the help.
if linear has the tools that you want, why move to nonlinear?
if you want to stay in nonlinear, your option is to model the spring connectors or model a part that acts like a spring.
as for your issues in linear, there are way too many thoughts blended together in that paragraph to know which study to look at or what problems are the priority.
I think you dont have to define spring.İf the ground is rigid you can use wirtual wall.
İf the ground is like sand, you should define a new material for sand. Create a box for sand.
Sand elastic module is 50-60 MPa.
Have you solved this question?
Could you please share the solution to me as I've got almost same question with yours.