September 4, 2019 at 9:27 amAbdoon075Subscriber
Hello experts ,,,,,
I'm going to do a fracture analysis for stiffened panel by using shell element, but I can't complete the pre-meshed crack modeling because I have to select an "Edge" for crack tip when I just have a "Point" (which is the green point in the attached pic.) because the panel is shell element not solid element
please help me ...
September 4, 2019 at 4:29 pmpeteroznewmanSubscriber
You have to use the Geometry editor to cut a Vee shaped crack into the edge of the sheet. Then you will have two edges that define the crack and a vertex at the crack tip.
September 5, 2019 at 9:23 am
September 6, 2019 at 1:26 pmpeteroznewmanSubscriber
I know a crack is supported in a 2D model, I don't know if a crack in a 3D shell models is supported.
Please get some experience using a pre-meshed crack in either a 2D model or a 3D solid model first, then you will know what success looks like.
You must create nodal named selections and you must create a coordinate system in the crack. Please read some ANSYS Help for more information.
September 6, 2019 at 4:03 pmAbdoon075Subscriber
In 2D model the crack tip must be a vertex, so the nodal named selection must be a point or a vertex. I tried 2D model and its work correctly. In 2D Model I must model the stiffeners as Line body, because in 2D analysis type I must draw in just only one plane (X-Y plane). In my case study I assume that the crack will propagate in plate and stiffener together, so I have to model a crack on the stiffener which I can't do if I model the stiffener as a line body. To eliminate the problem of modeling the crack on the stiffener I have to use 3D model. But When I use 3D I'll face the problem of creating the nodal named selection, because In 3D analysis the nodal named selection must be An edge at crack tip, but when I use shell element I have a point at crack tip
I read ANSYS help many times, but I didn't fine sol. for my problem
September 6, 2019 at 8:35 pmDavid WeedAnsys Employee
Hi, fracture analysis does not support shell elements, see here: https://ansyshelp.ansys.com/account/secured?returnurl=/Views/Secured/corp/v195/ans_frac/frac_parmcalcelemmatsupp.html
September 8, 2019 at 9:41 am
September 18, 2019 at 12:48 pmAbdoon075Subscriber
Does that mean shell element support the fracture analysis ???
October 4, 2019 at 12:04 pmpeteroznewmanSubscriber
Shell elements do not support fracture analysis.
- You must be logged in to reply to this topic.
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
- How to calculate the residual stress on a coating by Vickers indentation?
- whether have the difference between using contact and target bodies
- 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.