January 5, 2023 at 1:52 pmmergen.ericSubscriber
I am trying to find information on the best way to increment an imput load until a reaction force reaches a certain threshold. This is a static structural simulation.
For example: I start with a 1,000 pound load and I want to increase the load in 100 pound increments until a reaction force in a different part of my model reaches 500 pounds. I guess I could add load steps and input the forces in the table. But is there a different way to input my starting load, load increment, and reaction force threshold and have ANSYS do the load stepping?
January 5, 2023 at 9:28 pmpeteroznewmanSubscriber
If the model is linear, then you can get the input load Fin required to get a 500 lb reaction force output after you have solved the model one time using a 1000 lb input load and obtaining the reaction force output RFout by a simple ratio:
Fin = 1000*RFout/500
This assumes that RFout = 0 when Fin = 0. If there is an offset, such as there is also a gravity load that causes RFout to be non-zero when Fin = 0, then you just solve with Fin = 0 to get that offset value and subtract it from the equation.
If the model is nonlinear, then you use the same formula iteratively to get closer and closer to the value of Fin that gets you as close to 500 lb as you want.
You could also make the input load a parameter, an the reaction force output a parameter and use the Design Exploration module Direct Optimization and let Ansys automatically search for the value of Fin that delivers a Target value of RFout within a tolerance range.
January 5, 2023 at 9:41 pmmergen.ericSubscriber
Thank you for your reply Peter.
I think I'll look more into using parameteriztion and direct optimization.
- 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.
- Saving & sharing of Working project files in .wbpz format
- Understanding Force Convergence Solution Output
- An Unknown error occurred during solution. Check the Solver Output…..
- Solver Pivot Warning in Beam Element Model
- Colors and Mesh Display
- whether have the difference between using contact and target bodies
- How to calculate the residual stress on a coating by Vickers indentation?
- 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.
- User manual
© 2023 Copyright ANSYS, Inc. All rights reserved.