August 17, 2023 at 7:12 pm
August 18, 2023 at 1:25 pmAshish KumarForum Moderator
Use D command.
August 18, 2023 at 1:30 pmMassochy dos santos VenturaSubscriber
I used this command and the following information appears but without a solution
August 18, 2023 at 1:32 pmMassochy dos santos VenturaSubscriber
Do you have an example of a D command to restrict degree of freedom on all nodes
August 18, 2023 at 1:55 pm
August 18, 2023 at 2:45 pmMassochy dos santos VenturaSubscriber
Estou trabalhando com 25 nós e usei este código
D, TODOS, UX
D, TODOS, UZ
D, TODOS, ROTX
D, TODOS, ROTY
D, TODOS, ROTZ
e eu tinha uma matriz 25 * 25 por ser o número de nós vezes o grau de liberdade, mas eu tenho frequências naturais iguais a zero em todos os modos. Eu gostaria de saber se este resultado está correto
August 19, 2023 at 8:48 pmMike RifeAnsys Employee
This command is not quite correct: D ,All,UX,UZ,ROTX,ROTY,ROTZ,0,
Please see the MAPDL Command Help entry on the D command for the description of the commands fields. But most likely you wanted: d,all,ux,0,,,,uz,rotx,roty,rotz
August 19, 2023 at 9:01 pmMassochy dos santos VenturaSubscriber
I wonder if with these commands I can restrict the degrees of freedoms??
August 19, 2023 at 9:41 pmMike RifeAnsys Employee
What do you mean by restrict?
August 19, 2023 at 9:47 pmMassochy dos santos VenturaSubscriber
I'm doing a modal analysis on a free-free steel plate in order to extract stiffness matrix, mass matrix and the vectors corresponding to the vibration modes for each natural frequency. in order to reduce the values of the matrices so I intend to restrict some degrees of freedom all nodes since the matrix is formed by the multiplication between numbers of nodes and the degrees of freedom (in this case they are 6)..
- 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.