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Elastic Properties of Auxetic Structures
Posted Sep 12, 2024, 3:40 p.m. EDT Modeling Tools & Definitions, Structural Mechanics, Physics Interfaces 4 Replies
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I want to calculate effective elastic properties of Auxetic unit cell using periodic boundary conditions implementation using structural mechanics module of Comsol.
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Great. What's your specific question about your modeling of those structures in the COMSOL software?
-------------------Jeff Hiller
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Great. What's your specific question about your modeling of those structures in the COMSOL software?
Step by step guide would be helpful.
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Want to calculate effective youngs modulus and poisson ratio of auxetic unit cell
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Hello Navdeep,
To model an auxetic structures you follow the exact same steps as to model a non-auxetic structure (namely: draw/import the geometry, set up the physics, mesh, solve and post-process). Hence, you can get inspiration from any model in the Application Gallery showcasing a structural analysis, such as this one. In case you are just starting with the software and are looking for general training resources, I am including some suggestions below.
Once your model is solved, you will be able to determine the effective Young's modulus and Poisson ratio by relating them to the computed displacements and applied loads.
Best regards,
Jeff
Training Resources:
There are quite a number of resources you can draw upon to learn how to use COMSOL Multiphysics regardless of your specific application. I am mentioning here the main ones, in no specific order, and I should mention that this is not a complete list by any means. I hope it will prove useful to you nonetheless.
First, of course, there is the software's documentation. You can access it through the File > Help > Documentation menu or by browsing your COMSOL installation folder to the "doc" folder. The documentation includes both theory manuals and tutorial manuals. Many tutorial models are also available already set up inside the software via File > Application Libraries.
The COMSOL website also offers many video tutorials on a wide range of topics in the Video Gallery and worked-out models in the Application Gallery. You will also find longer archived webinars here. The COMSOL website also offer a Blog, in which many posts discuss how to simulate specific phenomena or using particular features of the software; they are highly technical and detailed.
COMSOL offers many instructor-led training courses.
Finally, and maybe most importantly, I strongly recommend the Learning Center videos to get a solid foundation for your modeling with COMSOL: they cover the entire process of setting up a model from start to finish, and are a great resource for self training.
-------------------Jeff Hiller