March 29, 2023 at 6:37 pmCarlos Valle NogueraSubscriber
I'm doing an impact simulation between a dental implant and a surface in transient structural, the problem that i'm having is that it doesn't detect when the impact happens and the bodies just trespass each other. I've already tried with setting the pinball region radius to include all the contact regions but it still doesn't detect it.
I was wondering what could be the reason for that.
I have also run into warnings where it says that the convergence value is lower than the threshold, and another warning saying contact status has experienced and abrupt change but the objects don't seem to make contact.
Thanks in advance for your help
March 30, 2023 at 1:10 pmChandra SekaranAnsys Employee
The 'abrupt' change could be that the contact has moved past the pinball radius i.e. moved from 'near contact' to 'far open' contact status. Can you move the geometry so that it is in initial contact or use the 'adjust to touch' option in contact so that initially the bodies are in contact? Or perhaps you can use contact stabilization damping? This AIS course https://courses.ansys.com/index.php/courses/prevent-rigid-body-motion-in-contact/ has a nice ideas of how to prevent rigid body motion.
March 30, 2023 at 5:39 pmCarlos Valle NogueraSubscriber
I've tried adjust to touck and they still behave like rigid bodies and don't make contact, they just go through one another.
March 30, 2023 at 5:49 pmChandra SekaranAnsys Employee
May be you can try a first load step with time integration (under analysis settings) turned OFF and with a small time value. The goal is to simply establish the initial contact conditions. I would recommend taking a look at the result of this load step (contact status) to make sure contact is established. Then start your transient from 2nd load step onwards by turning time integration ON.
April 3, 2023 at 4:49 ambutres aliSubscriber
I've tried adjusting and tucking, but they still act like hard bodies; they don't make touch with one another and instead merely pass right through one another.
https://forum.ansys.com/forums/topic/problems-detecting-the-contact-in-an-impact-analysis-with-transient-geometry dash subzero
- 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.