June 12, 2018 at 11:12 amsaraahf1Subscriber
I'm trying to create a contact between 2 nodes and I would like to define a initial gap between this two elements because initially they are separated with 5mm and the contact only can occurs if the force is sufficient to move both elements more than the defined gap. Does anybody know how to define the dimensions of the gap?
This is the part of code where I've created the contact.
June 12, 2018 at 11:18 ampeteroznewmanSubscriber
You should read this thread for info on COMBIN40 element which allows you to easily define a gap between two nodes.
June 12, 2018 at 12:07 pmsaraahf1Subscriber
Is it the same way to use it with CONTA178?
June 12, 2018 at 1:21 pmpeteroznewmanSubscriber
Both CONTA178 and COMBIN40 will use the initial locations of the two nodes as the initial gap.
CONTA178 keeps track of 3 DOF for the contact and supports sliding friction when the gap closes.
COMBIN40 keeps track of 1 DOF for the contact and requires a spring rate for the contact.
I had some models in the other thread that you can download and try each element.
What version of ANSYS are you using?
June 12, 2018 at 1:35 pmsaraahf1Subscriber
I'm using ANSYS APDL 15.0 and also have the same version of Workbench.
June 12, 2018 at 2:34 pmpeteroznewmanSubscriber
So build a 2 beam, 4 node model with a gap between the end points the beams as I did in this post, and try each element to see what works for you.
June 12, 2018 at 7:05 pmsaraahf1Subscriber
I'll keep in mind the building of the proposed model.
I was reading about the options for the initial gap for the CONTA178 and I've seen that you can define them by the keyopt(4)=1, but then it is necessary to define the gap with the real constant (real constan 2 I think). Maybe my question is very basic but I don't know how to define this in the code. Would it be like this (the real constant parameter is defined in this way)?
August 18, 2020 at 2:11 amDheerajKarkiSubscriberI was just wondering if you have find the answer to your question. I am having similar situation as yours. I need to define a gap contact element on connected elements. Can you please advise how to do that?Regards,nDheerajn
January 27, 2021 at 1:48 pmj.drozdowskiSubscriberHello. I'm trying to solve a benchmark which is done in Femap Nastran. Author is using GAP element with compression stiffness only defined. Is it possible to do something similar in Workbench ?.Is the CONTA178 an Ansys equiwalent ?nnn
- 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
- An Unknown error occurred during solution. Check the Solver Output…..
- What is the difference between bonded contact region and fixed joint
- User manual
- 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
- material damping and modal analysis
- Colors and Mesh Display
© 2023 Copyright ANSYS, Inc. All rights reserved.