August 17, 2023 at 3:45 pmjerome chassinSubscriber
I am creating an API in order to automate a set of simulations. (Modal, Random vibration, Transient shocks, Statics, in total more than 25 simulations).
Some of them are using bushing elements, and other remote displacements but not both in the same time. These are sharing the same surface/Edge as boundary conditions.
For now, I only activate/deactivate the remote displacements/Bushing connections corresponding to the adequate simulations but I would like to avoid this.
1/add an APDL command in the bushing element giving it an ID:
And so on, with all bushing elements ( this can be scripted easily)
2/Add an APDL command in the modal analysis to suppress Bushing connection using "esel" command for each bushing:
Note: we can considere here that remote displacement are blocked in the all direction
The solution dont seems to take into consideration the remote displacements--> the 6 first mode=0Hz.
The command seems to work for static.
Any Idea where I am missing the point?
--> I guess that bushing elements "overide" the remote displacement in the solver...
Thank you very much for your help.
August 18, 2023 at 1:46 pmChandra SekaranAnsys Employee
can you verify that remote displacement is active? May be issue DLIST command to check if the remote displacement is taking effect (or look at ds.dat to make sure the remote displacement is being applied).
August 18, 2023 at 2:48 pmjerome chassinSubscriber
I am not really use to APDL Command, and I am kind of lost here. How do you sugere using DLIST? (With the ACT console?)
I marked a remote displacement as “TestBC1” to find it easier in the ds.dat.
Here what I found, in both file ds.dat we have the remote displacement declared. With the APDL script and bushing activated it is also declared, while it is not when we manually suppress the bushings ( everything is normal here). With the script I am suppressing bushing when the APDL Command is called by the solver.
I also checked the "spider" BC should be applied.
- You must be logged in to reply to this topic.
Boost Ansys Fluent Simulations with AWS
Computational Fluid Dynamics (CFD) helps engineers design products in which the flow of fluid components is a significant challenge. These different use cases often require large complex models to solve on a traditional workstation. Click here to join this event to learn how to leverage Ansys Fluids on the cloud, thanks to Ansys Gateway powered by AWS.
Earth Rescue – An Ansys Online Series
The climate crisis is here. But so is the human ingenuity to fight it. Earth Rescue reveals what visionary companies are doing today to engineer radical new ideas in the fight against climate change. Click here to watch the first episode.
Subscribe to the Ansys Blog to get great new content about the power of simulation delivered right to your email on a weekly basis. With content from Ansys experts, partners and customers you will learn about product development advances, thought leadership and trends and tips to better use Ansys tools. Sign up here.
- Solver Pivot Warning in Beam Element Model
- Saving & sharing of Working project files in .wbpz format
- Understanding Force Convergence Solution Output
- User manual
- An Unknown error occurred during solution. Check the Solver Output…..
- What is the difference between bonded contact region and fixed joint
- The solver engine was unable to converge on a solution for the nonlinear problem as constrained.
- whether have the difference between using contact and target bodies
- Defining rigid body and contact
- Colors and Mesh Display
© 2023 Copyright ANSYS, Inc. All rights reserved.