September 5, 2023 at 1:11 pmLouis GirardinSubscriber
I have a mesh representing two curved surfaces facing each other, yet they are nearly symmetric, resulting in similar node orientations between the walls. I want to apply a displacement field to move the nodes only along the normal perpendicular to them within a Cartesian coordinate system. In other words, I only want the walls to move forward and backward with fixed lateral and vertical movement.
However, I want each node to move along its own y-coordinate and not relative to the global coordinate system.
I have understood that the specified displacement option moves the mesh along the global coordinate.
How can I formulate the displacement so that each node moves along its unique y-coordinate?
So far I am using only an expression that I call in the boundary-specified displacement.
Thank you for your help.
September 5, 2023 at 1:14 pmLouis GirardinSubscriber
More details: I have a complex cylinder-shaped structure with two inner surfaces creating two chambers inside the cylinder. There is a void between these inner surfaces. The outer wall of this structure moves with a specified displacement. What I want to achieve is for the two inner surfaces to move in response to the pressure difference between the two chambers. These inner surfaces should move symmetrically, meaning when one surface moves, the other one should move in the same direction and by a similar amount. This symmetry is maintained because the distance between the two surfaces remains roughly constant.
I initially applied a specific displacement along one axis, but due to the curved surface, I encountered issues with negative volume for larger displacements. To address this, you are considering using the "Normal Y * DisplacementExpression" to align each node along the normal direction, which would help maintain the structural integrity of the model
So far I have applied a specific displacement following only one axis as the nodes are globally oriented in the y direction, however as it is a curved surface, I run into negative volume for the largest displacements.
- 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.