Triangular lattice elasticity matrix calculation with cell periodicity

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Hello all,

My name is Sai Kubair Kota and I am a PhD student at the Delft University of Technology, the Netherlands. I have been trying to calculate the homogenized elasticity matrix of a triangular lattice material with its RVE and the cell periodicity feature in COMSOL. For some reason, I am way off from the elasticity matrix values given in the literature. I would like to understand if I am doing something wrong in the model such as with the meshing and boundary conditions. I am attaching the my COMSOL file here. If anyone has an answer for this, please let me know. Also please find the screenshot of the elasticity matrix values that I am using as a reference for validating the COMSOL calculations in this post. These calculations don't have to match exactly but they should be in a similar ball park. Thank you very much in advance.

Thanks and Regards, Sai Kubair Kota.

PS: I compressed the mph file to reduce its size. Please let me know if you face any problems when extracting the file from the zipped folder.



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