January 26, 2023 at 3:52 pmSushil SharmaSubscriber
I am trying to create a composite layup model of a wind turbine blade. How can I vary the composite thickness (linearly) along the length of the blade? I used the "selection rule" tool to subdivide the blade to model different ply numbers in a different section( it create constant thickness in each subsection which is not linearly variying). Is there any alternative way to perform the such task?
Secondly, when creating sandwich elements using the "section rule." how will they be stacked up towards the hub I want the core material always modeled in the middle between the fiber stacked up (in my case the sandwich element stacked up one behind the other).
Third, While using "section rule" to vary the composite thickness how can we deal about the abrupt variation in thickness in one section. Does it effect in fatigue analysis while there will be notch at every subdivided plane.
February 6, 2023 at 11:04 pmReno GenestAnsys Employee
If you have different number of plies along the length of the blade, then the thickness will not be constant. You should get a linearly changing thickness similar to the model I showed in another post:
Make sure you don't disable the ply drop-offs. Don't check the boxes in the image above.
Make sure the number of plies is different along the length of the blade and that the thickness is varying:
If the thickness is constant, then something is wrong in your model and layup.
If you follow the manufacturing process of the blade in ACP, you should be okay. In real life, which layer is put in the mold first? Then, this first layer should be applied in ACP. Which layer is put in the mold second? Do the same in ACP.
Let me know how it goes.
February 6, 2023 at 11:52 pmReno GenestAnsys Employee
If you have access to the Ansys Learning Hub (ALH), you will find the ACP training course here:
Or you can have a look at the following free course:
February 6, 2023 at 11:54 pmReno GenestAnsys Employee
Can you post a screenshot showing the problem of the sandwich elements being stacked up one behind the other? I can't picture the problem.
February 7, 2023 at 12:02 amReno GenestAnsys Employee
You want to avoid abrupt change in thickness in your composite layup; this will lead to stress risers which are not good for fatigue life. Make sure you have surfaces in your finished model as is the case in the real wind turbine blade. Your model should be like the real turbine blade. If you do the layup properly, you should end up with a linearly varying thicknesses due to ply drop-offs; you should not have abrupt changes in thickness. If the linearly varying thickness is not good enough for you, you can achieve a smoother thickness change by using a CAD surface to extrude the composite layup into a solid model (I assume you want to create the solid model):
You will find more information in the ACP help:
Let me know how it goes.
- 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.
- How to work with STL file?
- Rotate tool in ANSYS Design Modeler
- Using Symmetry in DesignModeler and Expanding the Results
- section plane
- ANSYS FLUENT – Operation would result in non manifold bodies
- material properties
- drawing a geometry by importing a table of points
- Geometry scaling
- Coordinates orientation
- “contact pair has no element in it.” how to resolve this problem
© 2023 Copyright ANSYS, Inc. All rights reserved.